factor x^2+10x+9
x^2+10x+9 = (x+a)(x+b)
where
a*b=9
a+b=10
So look for whole numbers that multiply together to make 9, and which add up to 10.
where
a*b=9
a+b=10
So look for whole numbers that multiply together to make 9, and which add up to 10.