factorize x square -4x - 21
plz answer me fast
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factorize x square -4x - 21
plz answer me fast
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[tex]{X}^2{-4x-21}[/tex]
[tex]\fbox\orange{Hope\ it\ is\ helpful\ to\ you\ mate....}[/tex]
x=7;x= -3
EXPLANATION:
x^2-4x-21
=x^2-7x+3x-21
=x(x-7)+3(x-7)
=(x-7)(x+3)
=>x=7;x= -3
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