1.4x^2=35

Solution for 1.4x^2=35 equation:

1.4x^2=35

We move all terms to the left:

1.4x^2-(35)=0

a = 1.4; b = 0; c = -35;
Δ = b2-4ac
Δ = 02-4·1.4·(-35)
Δ = 196
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{196}=14$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-14}{2*1.4}=\frac{-14}{2.8}
=-5
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+14}{2*1.4}=\frac{14}{2.8}
=5
$