Question

simplify : 3a(a-b) + b(a+b) and evaluate a =1 b =1​

Answer 1

Answer:

3a(a-b)+b(a+b)

3×1(1-1)+1(1+1)

3(0)+1(2)

0+2

2

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Answer 2

Answer:

=3a(a-b) + b(a+b)

put a=1,b=1

=3*1(1-1) + 1(1+1)

=3(0)+1(2)

=(3*0)+(1*2)

=0+2

=2