Mathematics
01.06.2021 18:10
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5x^2-40=0; solve by using square roots.
5x^2-40=0; solve by using square roots.
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iv267829
4,7(2 marks)
5x²-40=0. Add 40 to both sides. 5x²=40. Square both sides of the equation, use add or subtract sign. 5x=+-
. Then simplify the radical and divide both sides by 5. The answer is 2
or -2
. Then simplify the radical and divide both sides by 5. The answer is 2 or -2
travawnward
4,7(47 marks)
The ladder forms the hypotenuse of a right triangle whose legs correspond to the height of the point where the ladder touches the wall it leans against and the distance from the base of the ladder to the wall. If is the height at which the ladder meets the wall, then we have
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