Question

Q11 Use identity to find the product (a+7)(a+5) ,write the identity
used.
Q12 Simplify : 3a+2b2+3a-2b2
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Answer 1

Answer:

Step-by-step explanation:

11) (a+x)(x+b)= x^2 + ab + x(a+b)

(a+7)(a+5)= a^2 + 7*5 + a(7+5)

= a^2 + 35 + 12a

12) 3a+2b^2+3a-2b^2

= 3a+3a+2b^2-2b^2

=6a

Answer 2

This is the answer

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