YMU
x * x - 9x + 2x - 9*2
(x - 9)(x + 2)
x-9=0
x=9
x+2=0
x = -2
( x = 9, -2) but only -2 works
m*m -8m -1m + -8*-1
(m - 8)(m -1)
m-8=0
m=8
m-1=0
m=1
m = (8 , 1) both works
7 x * x -35x+4x - 5*4
( 7x + 4)(x -5)
7x+4=0
7 x = -4
x = -4/7
x-5=0
x = 5,
doesnt factor
because
they 45 doesnt multiply with 7
(5p + 9)( p - 2)
5p + 9 = 0
p = -9/5
p-2 =0
p=2
p = (-9/5 , 2) but only 2 works
p * p + -7p + 2p + -7 *2
(p - 7)(p +2)
p -7 = 0
p =7
p+2=0
p = -2
p = ( 7. -2)
x * x -9x-7x + -9*-7
(x -9)(x -7)
x-9=0
x=9
x-7=0
x=7
x = ( 7, 9)
k(7k + 9)
2b * b + 14 + 3 + 7 + 3
(2b + 3)(b + 7)
2b + 3 = 0
2b = -3
b = -3/2
b+7=0
b = -7
4n^2(7n - 10)(n+2)
(28n^3 - 40n^2)(n+2)
only (n+2)
n+2=0
n = -2
Both works