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प्रश्न
Solve the following quadratic equation by factorization method : `"x"^2 - 5"x" - 36 = 0`
उत्तर
`"x"^2 - 5"x" - 36 = 0`
`"x"^2 - 9"x" + 4"x" - 36 = 0`
`"x"("x" - 9) + 4("x" - 9) = 0`....{By Factorizing 36}
∴ `("x" - 9)("x" + 4) = 0`
x - 9 = 0 or x + 4 = 0
x = 9 or x = -4
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