Math, asked by karthiklucky39, 1 year ago

the solution set of x square - 4 x minus 21 less than or equal to zero is

Answers

Answered by hardikraval1305

1

Step-by-step explanation:

x^2-4x-21

x^2-7x+3x-21

x(x-7)+3(x-7)

(x-7)(x+3)

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