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Lelu [443]
2 years ago
9

Please help 50 points! Simplify the expressed

Mathematics
1 answer:
LenKa [72]2 years ago
3 0

Answer:

Step-by-step explanation:

\frac{x^{2} -x-12}{x+4} * \frac{2x^{2}-32 }{x^{2} -8x+16}  rewrite as multiplication

\frac{x^{2} +3x-4x-12}{x+4} * \frac{2(x^{2}-16) }{x^{2} -8x+16}  look to factor

\frac{x(x+3)-4(x+3)}{x+4} * \frac{2(x-4)(x+4) }{(x-4)^{2}}  , difference of 2 squares and perfect square

\frac{(x+3)(x-4)}{x+4} * \frac{2(x-4)(x+4) }{(x-4)^{2}}, finish factoring and simplify

2(x+3)

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Read 2 more answers
Let L be the line parametrized by x = 2 + 2t, y = 3t, z = −1 − t. (a) Find a linear equation for the plane that is perpendicular
Elden [556K]

Answer:

Step-by-step explanation:

Given that L is a line parametrized by

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The plane perpendicular to the line will have normal as this line and hence direction ratios of normal would be coefficient of t in x,y,z

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So equation of the plane would be of the form

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Use the fact that the plane passes through (2,0,-1) and hence this point will satisfy this equation.

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i.e. same point given.

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