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almond37 [142]
3 years ago
13

17. Solve the equation using square roots. x^2 + 5 = 41 a.+-36 b.no real number solutions c.6 d.+-6

Mathematics
2 answers:
Kipish [7]3 years ago
5 0
Solve your equation step-by-step.

x^2+5=41

Subtract 5 from both sides.

x^2+5−5=41−5

x^2=36

Take square root.

x=±√36

x=6

or

x=−6

So your answer suppose to be C and D.
But if you were to put only one answer in the answering box, then just say C)


hoa [83]3 years ago
3 0
x^{2}+5=41 \\  \\ x^{2}-36=0 \\  \\ (x-6)(x+6)=0 \\  \\ x-6=0 \ \vee \ x+6=0 \\  \\ x=6 \ \vee \ x=-6 \\  \\ x\in \lbrace -6,6 \rbrace
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