Question

X 2 -3x-10 factories by using -b root b^2-4ac/2a

Answer 1

Answer:

x² - 3x -10 = 0

ax² + bx +c =0

Comparing both we get a = 1 , b = -3 , c = -10

∴ x = -b ±√(b² - 4ac)/ 2a

     = 3 ± √(9 + 40) / 2

     = 3 ± 7 /2

∴ x = 5, -2

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