factorise the given quadratic equations in the photograph
15 and 16
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5y^2-45y-110=0
÷by 5
y^2-9y-22=0
y^2+2y-11y-22=0
y (y+2)-11 (y+2)=0
(y+2) (y-11)=0
y= -2 or y=11
I think factorisation is only for quadratic equation but ur 16th question is 4th degree polynomial so factorisation is not possible...
Hope this may help u...
÷by 5
y^2-9y-22=0
y^2+2y-11y-22=0
y (y+2)-11 (y+2)=0
(y+2) (y-11)=0
y= -2 or y=11
I think factorisation is only for quadratic equation but ur 16th question is 4th degree polynomial so factorisation is not possible...
Hope this may help u...
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