(x-3)(x+7)=0 solve it by quadratic
Answers
Answered by
1
(x-3)(x+7)=0
x=3-7
x=-4
x=3-7
x=-4
mademonikalyani:
but u not used quadratic equation
this question is of which class
i want to say that one should solve it by quadratic formula
yeah!
class10th
but sry I'm in class 8 only
okay! sis
o then so sorry
jst edit u r answer and rewrite it
it's ok
Answered by
2
heya
here is ur answer
===========
▶ (x-3) (X+7) =0
▶by binomial multiplication.
▶X (X+7) -3( X+7) =0
▶ x^2 +7x -3x -21 =0
▶ x^2+4x-21.↪this is the quadratic equation required
▶ (x-3) =0
▶ X=3
▶(X+7) =0
▶x=(-7)
✒ so the value of X can be 3 or (-7)
============
hope it helps u..!!
thnkq
here is ur answer
===========
▶ (x-3) (X+7) =0
▶by binomial multiplication.
▶X (X+7) -3( X+7) =0
▶ x^2 +7x -3x -21 =0
▶ x^2+4x-21.↪this is the quadratic equation required
▶ (x-3) =0
▶ X=3
▶(X+7) =0
▶x=(-7)
✒ so the value of X can be 3 or (-7)
============
hope it helps u..!!
thnkq
fantastic.... correct answer
thanks
u r vlcm
plz mark it as brainliest
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