How do you use the quadratic formula to solve $-2.8x=-3.8x^2+1.4$ ?

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Answer 1 · 2017-03-17T20:04:56

$x=1.0785,-0.3416$

Re-arrange the formula
$3.8x^2-2.8x-1.4=0$

This is the $ax^2+bx+c=0$ format,
so $a=3.8, b=-2.8, and c=-1.4$

The quadratic equation is $(-b+-sqrt(b^2-4ac))/(2a)$

Plug in the data: $(-(-2.8)+-sqrt((-2.8)^2-4*(3.8)*(-1.4)))/(2(3.8))$

How do you use the quadratic formula to solve -2.8x=-3.8x^2+1.4-2.8x=-3.8x^2+1.4?