Question

if (x2+1/25x2) =43/5 find the value of(x2-1/25x2​

Answer 1

Answer:

125/5

Step by step explanation:

x^2+1/25x^2=43/5

IF

x^2+2x1/5+1/25=43/5+2/5

(x+1/5x)^2=45/5

(x+1/5x)=±9

THEN

x^3+1/125x^3=(x+1/5x)[x^2-x(1/5x)+(1/25x)]

x^3+1/125x^3=3(43/5-1/5)

x^3+1/125x^3=3(42/5)

x^3+1/125x^3=3×42/5

x^3+1/125x^3=126/5

[126/5]

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