simplify (x + 1/x)²- (x - 1/x)²
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1
0
Step-by-step explanation:
0
.ANS -----0.
bonus
The perimeter of a triangle is 6x²+ 8x and the measure of two side is -5-3x + 5x² and 9 + 3x + 12x² . What will be the measure of the third side ?
Answered by
3
Answer:
4
Step-by-step explanation:
(x+1/x)^2 - (x-1/x)^2
(x + 1/x)^2 =>
x^2 + (1/x)^2 + 2(x)(1/x)
x^2 + 1/x^2 + 2 ____ (1)
(x - 1/x)^2 =>
x^2 + (1/x)^2 - 2(x)(1/x)
x^2 + 1/x^2 -2 ______(2)
(1) - (2) =>
x^2 + 1/x^2 + 2 - (x^2 + 1/x^2 - 2)
x^2 + 1/x^2 + 2 - x^2 - 1/x^2 + 2
2+2 = 4
I hope it's correct... I'm not sure because I'm weak at maths
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