Question

Simplify the following expression 3y(2y-7)-3 (y-4) - 63 and evaluate aty​

Answer 1

step-by-step:  Solve 3y(2y−7)−3(y−4)−63

First, simplify it,

=6y  

2

−21y−3y+12−63

=6y  

2

−24y−51

Put y=−2

=6(−2)  

2

−24(−2)−51

=6×4+48−51

6×4+48−51

24+48−51

=21

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