5 x square - 25 x + 20
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1
5x²-25x+20 = 0
x²-5x+4 = 0
x²-4x-x+4 = 0
(x-4)(x+1) = 0
so,
x = 4
or
x = -1
x²-5x+4 = 0
x²-4x-x+4 = 0
(x-4)(x+1) = 0
so,
x = 4
or
x = -1
Answered by
1
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