2x2+20x+42=0,quadartic equation
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Answered by
2
Hello.
2x^2+20x+42
2x^2+14x+6x+42
2x(x+7)+6(x+7)
(2x+6)(x+7)
that's all
2x^2+20x+42
2x^2+14x+6x+42
2x(x+7)+6(x+7)
(2x+6)(x+7)
that's all
Answered by
2
2x2+20x+42=0
2x2+(14+6)x+42=0
2x2+14x+6x+42=0
2x(x+7)+6(x+7)=0
(x+7)(2x+7)
2x2+(14+6)x+42=0
2x2+14x+6x+42=0
2x(x+7)+6(x+7)=0
(x+7)(2x+7)
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