Exponent Help...?

Question

7: x^2 + 6x - 16
(x + 2)(x - 8)
(x - 2)(x + 8)
(x - 4)(x + 4)
(x - 4)(x + 4)


8: x^2 - 14x + 40
(x - 4)(x + 10)
(x - 4)(x - 10)
(x - 8)(x - 5)
(x - 8)(x - 5)


9: x^2 - 12x + 32
(x + 16)(x - 2)
(x - 16)(x - 2)
(x - 8)(x - 4)
(x + 8)(x - 4)


10: x^2 + 8x - 33
(x + 3)(x - 11)
(x - 3)(x - 11)
(x - 3)(x + 11)
(x + 3)(x + 11)


11: x^2 + x - 12
(x + 6)(x - 2)
(x + 6)(x + 2)
(x - 4)(x + 3)
(x + 4)(x - 3)


12: x^2 - 15x + 50
(x + 5)(x + 10)
(x +10)(x - 5)
(x - 10)(x + 5)
(x - 10)(x - 5)


13: x^2 - x - 56
(x - 8)(x + 7)
(x + 8)(x - 7)
(x - 4)(x + 14)
(x - 4)(x - 14)

Answer 1

7: b
8: b
9: c
10: c
11: d
12: d
13: a

Answer 2

7. x^2+6x-16 (x-2)(x+8)

8. x^2-14x+40 (x-4)(x-10)

9. x^2-12x+32 (x-8)(x-4)

10.x^2+8x-33 (x-3)(x+11)

11. x^2+x-12 (x+4)(x-3)

12. x^2-15x+50 (x-10)(x-5)

13.x^2 -x-56 (x-8)(x+7)

Answer 3

7) (x-2) (x+8)
8) (x-4)(x+10)
9) (x-8) (x-4)
10) (x-3)(x+11)
11)(x+4) (x-3)
12)(x-10)(x-5)
13) (x-8) (x+7)

Answer 4

Are you asking for the answers? Or how to do these? Have you been taught the "Quadratic Formula"?

-b +/- sqrt(b² - 4ac)
-----------------------------
2a

Use this to solve these problems.

Or, you can multiply out all four of your answers and see which one matches the problem. For example:

7: x^2 + 6x - 16
(x + 2)(x - 8) = x² - 6x - 16 {nope}
(x - 2)(x + 8) = x² + 6x - 16 {yep}
(x - 4)(x + 4) = x² - 16 {nope}
(x - 4)(x + 4) = x² - 16 {nope}

P.S. Should the last two answers be the same for this question and for #8???

Answer 5

x² + 6x - 16 =

x² + 8x - 2x - 16 =

Factor by gouping

x(x + 8) - 2(x + 8) = 0

(x - 2)(x + 8)

- - - - - - - - -s-

Answer 6

lol