Question

Geeeeente, me ajudem nessa questão?

Answer 1

A = √9x
B = 2√100x
C = -8√36x

===
A - (B + C)

√9x - (2√100x + (-8√36x))
√9x - (2√100x -8√36x) 
3√x - (2.10√x - 8.6√x)
3√x - (20√x - 48√x)
3√x - (-28√x)
3√x + 28√x
=>  31√x