Question

3x 2 -x -10=0 to solve this quadratic equation by factorisation, complete the  following activity. Solution: 3x 2 -x -10=0  ∴ 3x 2 - 6 x + ( ) -10 =0∴ 3 x ( ) + 5(x -2)= 0  ∴ ( ) (x – 2) = 0  ∴ (3x +5) =0 or (x -2)=0  ∴ x = ( ) or x =2  ∴  −5 3 , 2 are the roots of the given quadratic equation.




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Answer 1

Answer:

Decide which of the following are quadratic equations.

(1) x2 + 5x – 2 = 0

(2) y2 = 5y – 10

(3) y2+

1

y

=2

(4) x+

1

x

=-2

(5) (m + 2) (m – 5) = 0

(6) m3 + 3m2 – 2 = 3m3

Step-by-step explanation:

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Answer 2

here is your answer

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