Question

simplify -3b(ab+b)+600 and find its values for a=4 and b=5

Answer 1

Answer:

975

Step-by-step explanation:

3b(ab+b)+600

= 3b^2(a+1)+600

Putting a=4 and b=5

3.5^2(4+1)+600

= 3.5^3 +600

= 975

Answer 2

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a+b= 12.