Math, asked by charlieeeegar21, 3 months ago

factorise 4x2 -8x -21 and verify.
CLASS 10 POLYNOMIALS

Answers

Answered by swatianurish

3

Answer:

(2x+3)(2x-7)

Step-by-step explanation:

$4x^{2} -8x-21$

= $4x^{2} -14x+6x-21$

= $2x(2x-7)+3(2x-7)$

= $(2x+3)(2x-7)$

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