please help hurry asap?

Question

Factor x^2 + 16x - 17.
A) (x + 1)(x - 17)

B) (x - 1)(x + 17)

C) Both A and B

D) Neither A nor B

Answer 1

B
because quadratics come in the form ax^2+bx+c
where a is the coefficient of x^2
b is the coefficient of x
and c is the constant

when factorising we have the form
(x+a)(x+b)
we know that a+b gives the b in the quadratic and a*b gives the c in the quadratic
+1and -17 multiply to give -17 which is right
they add to give -16 which is wrong
-1 and +17 multiply to give -17
and add to give +16 which are both correct
so the factorised version is
(x-1)(x+17)
or B

Answer 2

x^2+16x-17
=x^2-x+17x-17
=x(x-1)+17(x-1)
=(x-1)(x+17)
Hence B is the right answer

Answer 3

we are able to element this quadratic expression by potential of grouping: 2x^2 - 7x - 15 = 2x^2 - 10x + 3x - 15 replace the middle term with words that sum to the product fo the 1st and final term = 2x(x - 5) +3 (x - 5) element 2 words at a time = (2x + 3)(x - 5) element out the easy binomial element So, 2x^2 - 7x - 15 = (2x + 3)(x - 5)

Answer 4

(x + 17).(x - 1) = (x - 1).(x + 17)
ANSWER B)

Answer 5

B
Just B

Answer 6

b is correct

Answer 7

B

Answer 8

D