Which pair of lines are perpendicular
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Mathematics, 21.06.2019 19:00
Simplify. −4x^2 (5x^4−3x^2+x−2) −20x^6−12x^4+8x^3−8x^2 −20x^6+12x^4−4x^3+8x^2 −20x^8+12x^4−4x^2+8x −20x^6+12x^4+4x^3−8x^2
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Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*
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Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me
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