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5m*7m=875
We move all terms to the left:
5m*7m-(875)=0
Wy multiply elements
35m^2-875=0
a = 35; b = 0; c = -875;
Δ = b2-4ac
Δ = 02-4·35·(-875)
Δ = 122500
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$m_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$m_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{122500}=350$$m_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-350}{2*35}=\frac{-350}{70} =-5 $$m_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+350}{2*35}=\frac{350}{70} =5 $
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