Find the value of the following expressions if m=2, n=-1, a=3m and b= 5n (a) a2 + 4ab+b?
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Answered by
2
Answer:
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Answered by
11
Answer:
-89
Step-by-step explanation:
Given,
m = 2
n = -1
a = 3m
b = 5n
Then, by applying these values in the following expression, we get
a^2 + 4ab + b = (3m)^2 + { 4 × (3m) × (5n) } + (5n) =
= 9m^2 + 60mn + 5n
= (9 × 2 × 2) + (60 × 2 × (-1)) + (5× (-1))
= 36 + (-120) + (-5)
= 36 - 125 = -89
Hence, the required answer = -89
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