2x^2+5x+2 =0
y^2+9y+20 =0
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2 x^2 + 5 x + 2 = 0
2 x^2 + x + 4 x + 2 = 0 (using splitting middle term method)
x(2 x +1) + 2(2 x + 1) = 0
(2 x + 1)(x + 2) = 0
so, x = -1/2 , -2
y^2 + 9 y +20= 0
y^2 + 4 y + 5 y + 20=0
y(y+4) + 5(y + 4)=0
(y+4)(y+5)=0
so, y = -4 , -5
2 x^2 + x + 4 x + 2 = 0 (using splitting middle term method)
x(2 x +1) + 2(2 x + 1) = 0
(2 x + 1)(x + 2) = 0
so, x = -1/2 , -2
y^2 + 9 y +20= 0
y^2 + 4 y + 5 y + 20=0
y(y+4) + 5(y + 4)=0
(y+4)(y+5)=0
so, y = -4 , -5
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