1.

Simplify:(4sqrt7 - 2sqrt2) (3sqrt7+5sqrt5)​

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Answer:

2-2square is in the form of the SQUARE of a DIFFERENCE, in which

(a−b)2=a2−2ab+b2, where a=2andb=√2.

Substitute the GIVEN values into the equation a2−2ab+b2.

22−2⋅2⋅√2+√22 =

Simplify the terms.

4−4√2+2 = 6−4√2



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