Question

What are the solution(s) for the quadratic equation?

Y=5x^2-9x+4

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Answer 1

Let's see

$\\ \rm\rightarrowtail 5x^2-9x+4=0$

$\\ \rm\rightarrowtail 5x^2-5x-4x+4=0$

$\\ \rm\rightarrowtail 5x(x-1)-4(x-1)=0$

$\\ \rm\rightarrowtail (5x-4)(x-1)=0$

$\\ \rm\rightarrowtail x=4/5,1$