solve (x-6) (x+7) = (x+3) (x-11)
Answers
Answered by
18
(x-6)(x+7)= x^2 +7x - 6x -42
= x^2 +x -42
(x+3)(x-11)= x^2 -11x +3x -33
=x^2 - 8x -33
compare both as there is "=" between them
x^2 +x -42= x^2 -8x -33
9x = 42 -33
9x=9
x=1
hope u understand...
= x^2 +x -42
(x+3)(x-11)= x^2 -11x +3x -33
=x^2 - 8x -33
compare both as there is "=" between them
x^2 +x -42= x^2 -8x -33
9x = 42 -33
9x=9
x=1
hope u understand...
Answered by
8
(x-6) (x+7) = (x+3) (x+11)
x(x+7) -6(x+7)= x(x+11) +3(x+11)
x`2+7x-6x-42=x`2+11x+3x+33
x-42=14x+33
-42-33=14x-x
-75=13x
-75\13=x
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