Roots of the quadratic equation 9x2 - 3x -2 = 0 by factorisation are
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5
Answer:
9x2-3x-2=0
9x2+3x-6x-2=0
3x(3x+1)-2(3x+1)=0
(3x+1) (3x-2)=0
3x+1=0
3x=0-1
3x=-1
x=-1/3.
3x-2=0
3x=0+2
3x=2
x=2/3
x=-1/3. ,x=2/3
Answered by
1
Answer:
9x^2-3x-2=0
9x^2-3x-2=09x^2-6x+3x-2=0
9x^2-3x-2=09x^2-6x+3x-2=03x(3x-2)1(3x-2)=0
9x^2-3x-2=09x^2-6x+3x-2=03x(3x-2)1(3x-2)=0Either 3x+1=0 OR 3x-2=0
9x^2-3x-2=09x^2-6x+3x-2=03x(3x-2)1(3x-2)=0Either 3x+1=0 OR 3x-2=03x=-1 or 3x=2
9x^2-3x-2=09x^2-6x+3x-2=03x(3x-2)1(3x-2)=0Either 3x+1=0 OR 3x-2=03x=-1 or 3x=2x=-1/2or x=2/3
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