Question

Simplify the expression and find its value when a = 15 and b = – 9. 12(2a2 + ab -2ab) - 23 – 14ab + 16b​

Answer 1

Answer:

2 (a2 + ab) + 3 − ab = 2a2 + 2ab + 3 − ab

= 2a2 + 2ab − ab + 3

= 2a2 + ab + 3

= 2 × (5 × 5) + 5 × (−3) + 3

= 50 − 15 + 3 = 38

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