Question

4a+3b+2 = a- 4 and b- - 1​

Answer 1

Answer:

the required result is 15.

Step-by-step explanation:

4a+3b+2

4(4)+3(-1)+2

16+(-3)+2

18-3

15

Answer 2

Step-by-step explanation:

(4a+3b)

2

−(4a−3b)

2

+48ab

=((4a)

2

+2(4a)(3b)+(3b)

2

)−((4a)

2

−2(4a)(3b)+(3b)

2

)+48ab

=(4a)

2

+2(4a)(3b)+(3b)

2

−(4a)

2

+2(4a)(3b)−(3b)

2

+48ab

=48ab+48ab

=96ab

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