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Which of the following expressions is equivalent to ab2 + 6ab + 7a3 – 14a?

(b + 7)(b + 6)(a2 – 2)
b(b + 6) + 7(a2 – 2)
a[b(b + 6) + 7(a2 – 2)]
a[(b + 7)(b + 6)(a2 – 2)]

Sagot :

Hi1315idn

Answer:

3rd answer is correct

Step-by-step explanation:

Take the common factor out.

[tex]a {b}^{2} + 6ab + 7a ^{3} - 14a \\ a[ {b}^{2} + 6b + 7 {a}^{2} - 14] \\ \blue{ a[b(b + 6) + 7( {a}^{2} - 2)]}[/tex]

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