Question

Given m=-2 andn=6, evaluate :

(ii) 2m2 +8n iv) 3m3+ 2mn +n

(i) mtn

Simplify the expressions and find their values ifx = 2, a =-1, b=-3:

i) 4a²-b²+6a²-7b²​

Answer 1

Answer:

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Answer 2

answer is -42. please mark me as brainliest