3 years ago

(a - b)(a2 + ab + b2)

1 answer:

8 0

Answer:

THE ANSWER IS THIS FOR THE QUESTION UP TOP

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pickupchik [31]

$\dfrac{b^{-1}}{ca^{-1}-ac^{-1}}=\dfrac{\frac1b}{\frac ca-\frac ac}$

Multiply the numerator and denominator by $ac$ :

$\dfrac{\frac1b}{\frac ca-\frac ac}\cdot\dfrac{ac}{ac}=\dfrac{\frac{ac}b}{c-a}$

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