1x*2x=1120

Solution for 1x*2x=1120 equation:

1x*2x=1120

We move all terms to the left:

1x*2x-(1120)=0

Wy multiply elements

2x^2-1120=0

a = 2; b = 0; c = -1120;
Δ = b2-4ac
Δ = 02-4·2·(-1120)
Δ = 8960
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{8960}=\sqrt{256*35}=\sqrt{256}*\sqrt{35}=16\sqrt{35}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-16\sqrt{35}}{2*2}=\frac{0-16\sqrt{35}}{4}
=-\frac{16\sqrt{35}}{4}
=-4\sqrt{35}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+16\sqrt{35}}{2*2}=\frac{0+16\sqrt{35}}{4}
=\frac{16\sqrt{35}}{4}
=4\sqrt{35}
$