Question

Please help will give brainliest

Answer 1

So, the questions is 4b * (√7b)^2

= 4b * (√7b) * (√7b)

= 4b * (7b)

= 28b^2

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Answer 2

Square root to the power of 2 will disappear, so:

-> 4b x (sqroot (7b))^2

= 4b x 7b
= 28b^2