i have 54 math problems to do :( help me
x^2-7x+12=0
Answers
Answered by
1
x² - 7x + 12 = 0
By factorizing method.
x² - 3x - 4x + 12 = 0
x(x- 3) - 4 ( x - 3) = 0
( x - 4 )( x - 3 ) = 0
x = 4 , x = 3
=========================================================
By second method
x² - 7x + 12 = 0
By quadratic formula
x = -b + √ b² - 4ac , x = - b - √ b² - 4ac
2a 2a
x = 7 + √ 49 - 48 , x = 7 - √ 49 - 48
2 2
x = 8/2 , x = 6/2
x = 4 , x = 3.
By factorizing method.
x² - 3x - 4x + 12 = 0
x(x- 3) - 4 ( x - 3) = 0
( x - 4 )( x - 3 ) = 0
x = 4 , x = 3
=========================================================
By second method
x² - 7x + 12 = 0
By quadratic formula
x = -b + √ b² - 4ac , x = - b - √ b² - 4ac
2a 2a
x = 7 + √ 49 - 48 , x = 7 - √ 49 - 48
2 2
x = 8/2 , x = 6/2
x = 4 , x = 3.
Similar questions