What is the standard form of $y= (-1/9x+2/49x^2)(7x-18)$ ?

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Answer 1 · 2018-04-19T09:16:08

$color(brown)(=> (2/7)x^3 - (667/441)x^2 + 2x$

$y = (-(x/9) + (2x^2)/49) * (7x - 8)$

$=> -(7x^2)/9 + (2x^3)/7 + 2x - (36x^2) / 49$

$=> (2x^3)/7 -((7x^2)/9 + (36x^2)/49) + 2x$

$=> (2x^3)/7 - ((343x^2 + 324x^2)/441) + 2x$

$color(brown)(=> (2/7)x^3 - (667/441)x^2 + 2x$

What is the standard form of y= (-1/9x+2/49x^2)(7x-18) y= (-1/9x+2/49x^2)(7x-18) ?