2y squared-15y+7?

Answer 1

Assume that 2 y ² - 15 y + 7 has to be factorised:-
( 2 y - 1 ) ( y - 7 )

Answer 2

a million. (?seventy 2) / ninety 8 = ?(36*2) / ninety 8 = ?36 * ?2 / ninety 8 = 6?2 / ninety 8 = 3?2 / 40 9 2. (?a^7) / 25a = ?(a^2 * a^2 * a^2 * a) / 25a = ?a^2 * ?a^2 *?a^2 *?a / 25a = a*a*a*?a / 25a = a^2?a / 25 3. 4?fifty 4 - ?24 = 4?(9*6) - ?(4*6) = 4*3?6 - 2?6 = 12?6 - 2?6 = 10?6 4. 2?8x?4x = 2*?(8x * 4x) = 2*?(32x^2) = 2?32?x^2 = 2x?(16*2) = 2x?16?2 = 8x?2 5. ?x = 11, squaring each and each and every aspect provides, x = 11^2 = 121 6. element: 20y^3 + 5y^2 - 15y = 5y(4y^2 + y - 3) 7. element: 15b^3 - 6b^2 - 25b + 10 = 3b^2(5b-2) - 5(5b-2) = (5b-2)(3b^2-5) 8. remedy equation by ability of factoring: x^2 + 15x + 36 = 0 (x + 12)(x+3) = 0 x = -12 or -3 9. element the trinomial: t^2 + 4t - 32 = (t + 8)(t - 4) 10. remedy equation by ability of factoring: 2a^2 + 7a + 6 = 0 (2a + 3 )(a + 2) = 0 a = -3/2 or a = -2. 11. be certain no matter if x^2 - 80 one is a huge difference of two squares. if so, element it. that is because, x^2 - 9^2 = (x-9)(x+9) 12. remedy equation by ability of factoring: x^2 - 4x + 4 = 0 (x - 2)(x - 2 ) = 0 x = 2, 2 13. tell no matter if the point (8,0) in on the graph of 2x + 7y = 16 LHS = 2x + 7y = 2(8) + 7(0) = 16 = RHS. for this reason, that's. 14. Write an equation in slope-intercept kind for the line perpendicular to: y = -4x - 7; that passes by ability of (8,-a million) Gradient of given line, l1 = -4 Gradient of line perpendicular to l1, say l2 = -a million/-4 = 0.25 Equation of line l2: y - y1 = m(x-x1) y - (-a million) = 0.25(x-8) y + a million = 0.25x - 2 y = 0.25x - 3 15. remedy: (4m + 7)/3 = 5 Multiplying for the time of by ability of three provides: 4m + 7 = 15 4m = 15 - 7 4m = 8 m = 2 16. remedy the gadget by ability of substitution: y = -2x +a million ...(a million) 7x + y = -4 ...(2) (a million) in (2): 7x + (-2x + a million) = -4 7x -2x + a million = -4 5x = -5 x = -a million In (a million), y = -2x + a million = -2(-a million) + a million = 3 for this reason (x, y) = (-a million, 3). 17. remedy the gadget by ability of eliminating: 2x + 3y = 23 ...(a million) x - 2y = 8 ...(2) From (2), x = 8 + 2y Substituing in (a million): 2(8+2y) + 3y = 23 16 + 4y + 3y = 23 7y = 7 y = a million for this reason x = 8+2y = 8+2(a million) = 10 hence, (x,y) = (10, a million) 18. locate the coordinates of the vertex of right here equation: y = 2x^2 + 8x - 17 Axis of symmetry is x = -b/(2a) = -8/(2*2) = -2 At x = -2, y = 2(-2)^2 + 8(-2) - 17 = -25 The vertex is (-2, -25).

Answer 3

2y^2 -15y +7
(factor)
y^2 -15y +14
(y - 14)(y - 1)
(divide by 2)
(y - 7)(2y - 1)

there's your answer

Answer 4

= 2y^2 - 15y + 7
= (y - 7)(2y - 1)

y - 7 = 0, y = 7
2y - 1 = 0, 2y = 1, y = 1/2

Answer: Factors are (y - 7)(2y - 1) and so y is either 7 or 1/2

Answer 5

If you are trying to factor this:
(2y-1)(y-7)

Answer 6

(2y-1)(y-7)

y= 1/2 or 7

Answer 7

2y^2-15y+7
(2y-1)(y-7)

Answer 8

if it is equal to 0 then it can be written as 2y^2-14y-y+7=0
ie 2y(y-7) -(y-7)=0
ie (2y-1)(y-7)=0
so y=1/2 or y=7

Answer 9

factor
(2y - 7)(y - 1) = 0
2y - 7 =0 and y -1 = 0
2y = 7 and y = 1
y = 7/2 and y = 1
Therefore 1 and 3.5

Answer 10

(2y-1)(y-7)