Question

find the roots of the quadratic equation X square - 9 X + 20 is equal to zero by factorization

Answer 1

Hope it helps...... ...

Answer 2

By sllitting the midle term....

x^2 - 9x + 20

= x^2 - 5x - 4x +20

= x(x - 5) - 4(x - 5)

= (x - 4) (x - 5)

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Hopes it is helpfull to you....