Question

What is the value of expression 3y(2y - 7) - 3(y - 4) - 63 at y = -2.​

Answer 1

Answer:

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Step-by-step explanation:

3y(2y-7)-3(y-4)-63

if y= -2

then,

3(-2)(2×-2-7)-3(-2-4)-63

= -6(-4-7)-3(-2-4)-63

= -6(-11)-3(-6)-63

=66+18-63

=84-63

=21