Question

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Answer 1

Answer:

Step-by-step explanation:

6 c) x^2 + 11x + 18

x^2 + 9x +2x + 18

x(x+9) +2(x+9)

(x+9) (x+2)=0

x= ‐9 and x= ‐2

6 d) x^2 + 4x ‐ 77

x^2 + 11x ‐ 7x ‐ 77

x(x+11) ‐7(x+11)

(x+11) (x‐7)=0

x = ‐11 and x = 7

Answer 2

$\pink{c) {x}^{2} + 11x + 18}$

$- > {x}^{2} + 9x + 2x + 18$

$- > x(x + 9) + 2(x + 9)$

$- > (x + 9)(x + 2)$

$\blue{ d) \: {x}^{2} + 4x - 77}$

$- > {x}^{2} + 11x - 7x - 77$

$- > x(x + 11) - 7(x + 11)$

$- > (x + 11)(x - 7)$

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