Question

Find the zeros of quadratic polynomial 3x²-3x-6 and verifi it

Answer 1

Step-by-step explanation:

3x^2 - 3x - 6 = 0

3x^2 -6x + 3x - 6 =0

3x (x - 2 ) + 3 ( x - 2) = 0

(3x + 3 ) ( x - 2) = 0

x = -3/3 = -1 Or x = 2

verification

first put x = -1 in a given equation

3(-1)^2 - 3(-1) - 6 = 0

3 + 3 - 6 = 0

6 - 6 = 0

0 = 0

hence verified,

Now, put x = 2

3(2)^2 - 3(2) - 6 = 0

3 x 4 - 6 - 6 = 0

12 - 12 = 0

0=0

hence verified

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