Question

Add:
3a square b , -5a square b , 10a square b , -7a square b
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Answer 1

Answer:

$= ( {3a}^{2} b ) + ( - {5a}^{2} b) + ( {10a}^{2} b) + ( - {7a}^{2} b)$

$= {3a}^{2} b - 5 {a}^{2} b + 10 {a}^{2} b - 7 {a}^{2} b$

$= { - 2a}^{2} b + 3 {a}^{2}b$

$= {a}^{2} b$