Factorize 2x\(^2\) - 21x + 45

EstherTemiloluwaFeranmi060510

3 years ago

2x² - 21x + 45
product= 2×45 = 90
sum= -21
factor= -6 -15
2x² - 6x - 15x + 45
2x(x -3) -15(x-3)
(x-3) (2x-15)

bellagal

6 years ago

short method.
open bracket of answer and check if it gives u the original eqtn