Question

class=Vll Maths chapter name -simple linear equations
solve X2-36=0
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Answer 1

Answer:

Step-by-step explanation:

First method :

X² - 36 = 0

⇒ X² = + 36

⇒ X² = 6²

As powers are equal bases are also equal

⇒ x = 6

Second method :

X² - 36 = 0

⇒ X² - 6² = 0

applying a²-b² = (a+b) (a-b) formula

⇒ ( X+6) (X-6) = 0

⇒ X+6 = 0 and X-6 = 0

⇒ X = -6 and X=6