(-5-square root -7)^2

Algebra
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(-5-square root -7)^2

May 26th, 2015

(-5-square root -7)^2

(-5-square root(-7)*(-5-square root(-7)

-5*(-5-square root(-7)-square root(-7)*(-5-square root(-3))

multiplying out those terms gets:

25+5*square root(-7)+5*square root(-7)+square root(-7)*square root(-7)

combine like terms together

25+10*square root(-7)+(square root(-7))^2

simplify this further to get:

25+10*square root(-7)-7=18+10*square root(-7)]







May 26th, 2015

is that 10 times the square root of -7 ?

May 26th, 2015

yes dear

May 26th, 2015

(-5-square root -7)^2

(-5 - square root of -7)^2


i got 18 + 5sqrt(-7)


May 26th, 2015

where did you get 5sqrt from dear?

May 26th, 2015

Okay, i re did it...but i got 18+ 10 SR 7 not -7....

May 26th, 2015

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May 26th, 2015
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May 26th, 2015
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