factorise 4x^2-5x-1 and find the zeroes.
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4x²-5x-1.......
a=4..b=-5...c=-1...
By quadratic formula......(b²-√b-4ac)/2a.......zeroes r......5-√41/8...&..5+√41/8..
MysticalShadow:
Factorisation ?
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