(1)After completing thesquare, the original equation becomes(x-1)2=6, and the solutions are x=1+√6.(2) Aftercompleting the square, the original equationbecomes(x-2)2=10 000, so x_1=102 ,x2=98. (3) After completing the square, theogn qutonbecoes (x-3/(10))^2=1/4 othes...
C.Questions that require solutions ⑩ Solve the equations(by completing the square) (1)x2-2x-5=0; (2)x2-4x=9996; (3)x2-0.6x-0.16=0; (4)2x2+4x-7=0; ω (8)3x2-2=4x; (9) (10 相关知识点: 试题来源: 解析 优质解答 反馈 收藏 ...
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The solutions are the conjugate pair:−3 + , −3 − .For a method of checking those roots, see the theorem of the sum and product of the roots: Lesson 10 of Topics in Precalculus,In Lesson 18 there are examples and problems in which the coefficient of x is odd. Also, some ...
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How to complete the square if your x squared term has a coefficient The number of solutions provided when you complete the square Which steps to take to complete the square using practice problems as examples How to solve equations by completing the square ...
You will need probably rounded forms for "real life" answers to word problems, and for graphing. For instance, for the above exercise, it's a lot easier to graph an intercept atx= -0.9than it is to try to graph the number in square-root form with a "minus" in the middle. But (...
and model different completing the square problems with algebra tiles, and explain both verbally and in writing why adding (and subtracting) (b/2)^2 works to complete the square. I would probably also ask if you could “complete the cube,” and have them justify their answer as an ...
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