Question

Practice Set 2.2
1. Solve the following quadratic equations by factorisation.
(1)r -15.1 + 54 = 0
(2). + r - 20 = 0 (3)
sent the Answer​

Answer 1

Step-by-step explanation:

– 15x + 54 = 0

⇒x2−9x−6x+54=0

⇒x(x−9)−6(x−9)=0

⇒(x−6)(x−9)=0

⇒(x−6)=0 or (x−9)=0

⇒x=6 or x=9

So, 6 and 9 are the roots of the given quadratic equation

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