题目2. Solve the following guadratic equations by using completing the square method.(a)$$ 2 x ^ { 2 } + 5 x - 2 = 0 $$(b)$$ - 2 x ^ { 2 } + 7 x + 8 = 0 $$(c)$$ - x ^ { 2 } + 5 x + 8 = 0 $$(d)$$ - x ^ { 2 } - 2 x + 4 = 0 $$(e)...
Completing the square is one of the methods used in solving quadratic equations. This method will transform the equation so that the left side of the equation is a perfect square trinomial.Answer and Explanation: Given the equation {eq}3x^2 - 6x - 1 = 0 {/eq}, we solve for...
Subtract ( 5) from both sides of the equation. ( z^2-6z=-5) To create a trinomialsquare on the left side of the equation, find a value that is equal to the square of half of ( b). ( ((b/2))^2=((-3))^2) Add the term to each side of the equation. ( z^2-6...
To create atrinomialsquareon the left side of theequation, find a value that is equal to thesquareofhalfofbb. (b2)2=(−5)2(b2)2(-5)2 Add thetermto each side of theequation. x2−10x+(−5)2=−20+(−5)2x2-10x+(-5)2=-20+(-5)2 ...
Answer to: Use completing the square to solve 3x^2 - 18x = 21 for x. By signing up, you'll get thousands of step-by-step solutions to your homework...
【解析】 Add s to both sides of the equation. $$ x ^ { 2 } - 4 x = 8 $$ To create a trinomialsquare on the left side o f the equation, find a value that is equal to t he square of half of b. $$ ( \frac { b } { 2 } ) ^ { 2 } = ( - 2 ) ^ { 2 } ...
Solve the following quadratic equation by completing square method: ... 07:57 Solve following quadratic equations by completing the square method... 07:17 Solve following quadratic equations by completing the square method... 05:18 Solve following quadratic equations by completing the square method...
【解析】 Add $$ \frac { 1 } { 5 } $$to both sides of the equation. $$ 5 x ^ { 2 } + x = \frac { 1 } { 5 } $$ Divide each term by 5 and simplify. $$ x ^ { 2 } + \frac { x } { 5 } = \frac { 1 } { 2 5 } $$ T o create a trinomialsquare...
Solve by completing the square method: 2x^2 - 9x- 5 = 0. Solve by completing the square method: x^2 - 12x= -35. How do you solve x^2 + 16x = 0 by completing the square? How do you solve for x in x^2 - 6x - 5 = 0 by completing the square? How do you solve by co...
Completing the Square:Completing the square is one of the methods of solving an equation. However, this method is only applicable for quadratic equations or equations with a degree of 2.Answer and Explanation: We are given the equation x2−6x−5=0. We want to solve for ...