mathdad
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(-2sqrt{8 - 2{7}})^2
(-2sqrt{8 - 2{7}})(-2sqrt{8 - 2{7}})
4(8 - 2sqrt{7})
Correct?
(-2sqrt{8 - 2{7}})(-2sqrt{8 - 2{7}})
4(8 - 2sqrt{7})
Correct?
greg1313 said:Yes.
HallsofIvy said:Originally you had "(-2sqrt{8 - 2{7}})^2". Where did the sqrt{7} come from? Did you intend to write "(-2sqrt{8 - 2sqrt{7}})^2"?