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(14x*21x)=294
We move all terms to the left:
(14x*21x)-(294)=0
We add all the numbers together, and all the variables
(+14x*21x)-294=0
We get rid of parentheses
14x*21x-294=0
Wy multiply elements
294x^2-294=0
a = 294; b = 0; c = -294;
Δ = b2-4ac
Δ = 02-4·294·(-294)
Δ = 345744
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{345744}=588$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-588}{2*294}=\frac{-588}{588} =-1 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+588}{2*294}=\frac{588}{588} =1 $
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