Question

Xsquare+1/square=7 find x+1/x

Answer 1

Answer:

hy

Step-by-step explanation:

X² + 1/x² = 7 [ use, formula , a² +b² = (a + b)² -2ab ] (x + 1/x)² -2.x.1/ x = 7 (x + 1/x)² -2 = 7 (x + 1/x )² = 9 take square root both sides ,.

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Answer 2

Answer:

x^2+1/x^2=7

》(x)^2+(1/x)^2=7

》(x+1/x)^2-2×x×1/x=7

》(x+1/x)^2-2=7

》(x+1/x)^2=7+2

》(x+1/x)^2=9

》x+1/x= root 9

》x+1/x=3 (ANSWER)

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