Math, asked by Varun1979, 8 months ago

Factorise x square + 4x - 21

Answers

Answered by spichhoredot123

4

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Answer:

x²+4x-21 =0

x²+7x-3x-21 =0

x(x+7) -3(x+7) = 0

x+7=0 or x-3=0

x= -7 or x = 3

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