Question

solve this using splitting the middle term x square + 4x - 21​

Answer 1

Answer:

This is the correct solution for this question

Answer 2

$\huge \star \sf \underline \pink{answer}$

x²+4x-21

x²+(7-3)x-21

x²+7x-3x-21

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

(x+7)(x-3)

x=-7 or 3

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