solve the following quadratic equation:
x2-5x=2(3-2x)
Answers
Answered by
1
Step-by-step explanation:
x²-5x=2(3-2x)
x²-5x=6-4x
x²-5x+4x-6=0
x²-x-6=0
x²-3x+2x-6=0
x(x-3)+2(x-3)=0
(x-3)(x+2)=0
(x-3)=0 or (x+2)=0
x=3 or x=-2
therefore the root of quadratic equations is 3 and -2.
Answered by
1
★ Given :-
- x² - 5x = 2( 3 - 2x )
★ ToFind :-
- The quadratic equation and the roots of it .
★ Solution:-
⟼ x² - 5x = 2 ( 3 - 2x )
⟼ x² - 5x = 6 - 4x
⟼ x² - 5x + 4x - 6 = 0
⟼ x² - x - 6 = 0
Now, by doing middle term factorisation we get
⟼ x² - ( 3 -2 ) x - 6 = 0
⟼ x² - 3x + 2x - 6 = 0
⟼ x( x - 3 ) + 2 ( x - 3 ) = 0
⟼ ( x - 3) ( x + 2 ) = 0
so, Either ,
⟼ x - 3 = 0
⟼ x = 3
Or,
⟼ x + 2 = 0
⟼ x = -2
so, the roots of the quadratic equation are 3 , -2 .
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