Answer:
Number = x
4x^2 = 20x
4 x^2 -20x = 0
Dividing both sides by 4
x^2 -5x =0
(x -5) (x +0) = 0
x = 5
and x = 0
Explanation:
4X^2=20X
4X^2-20X=0
4X(X-5)=0
4X=0
X=0
X-5=0
X=5 SOLUTION
PROOF
4*5^2=20*5
4*25=100
100=100
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