Question

Simplify: (3a-4b+2)(5a+6) and find the value at a=1, b=-2
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Answer 1

Answer:

- 77

Step-by-step explanation:

Let 'a' be 1

And 'b' as 2.

= (3(1)-4(2)+2)×(5(1)+6)

= (3-8+2)×(5+6)

= (-7)×(11)

= -77