Simplify the expression
7√7 - 2√28
2 answers:
<span>7√7 - 2√28
2 sqrt(28) = 4 * sqrt(7)
7*sqrt(7) - 4*sqrt(7) =
3 * sqrt(7)
</span>
7squareroot7-2squareroot28
=7squareroot7-2×2squareroot7
=7squareroot7-4squareroot7
=3squareroot7
=3×2.64
=7.92
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