Question 421725
2((2x)^2) = 450
2(4x^2) = 450
8x^2 = 450
x^2 = {{{450/8}}}
x^2 = 56.25
x = {{{sqrt(56.25)}}}
x = 7.5 is the original number
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:
Check:
 2(2*7.5)^2 =
2(15^2) =
2*225 = 450