2015年8月12日 · #x^2-4x=0# Here #color(blue)(x# is common to both the terms of the expression. #color(blue)(x)(x-4)=0# Now we equate each of the two factors to zero, to obtain the solutions.

2016年7月23日 · x = -0.586 " or "x = -3.414 x^2 +4x + 2=0 cannot be factored because there are no factors of 2 which add up to 4. It can be solved by the method of completing the square or …

2018年5月5日 · x in RR (x+2)^2=x^2+4x+4 Factor right side, (x+2)^2=(x+2)^2 Square root both sides, x+2=x+2 Move like-terms together, x-x=2-2 Simplify, 0x=0 Since, both sides are similar, …

2018年3月4日 · The quadratic formula states:. For #color(red)(a)x^2 + color(blue)(b)x + color(green)(c) = 0#, the values of #x# which are the solutions to the equation are given by:

2016年7月12日 · x = 6 and x = -2 By moving 4x to the left of our equation, we can then complete the square in the following way: x^2 = 4x + 12 x^2 -4x = 12 We take the coefficient on the x …

2017年7月13日 · See a solution process below: First, expand the terms in the right parenthesis by multiply each term within the parenthesis by the term outside the parenthesis: (x + 5) - …

2016年8月2日 · 2(x+1)^2-7 We begin with y=2x^2+4x-5. We need to rewrite this into vertex form. The easiest way to do that is to complete the square. This is a very useful way to factor, and I …

2018年6月1日 · Find the intercepts and the vertex. Set x=0 to find the y intercept: y = x^2 + 4x + 1 y = 0^2 + 0x + 1 y=1 Set y=0 to find the x intercept(s) if they exist: y = x^2 + 4x + 1 0 = x^2 + …

2015年11月17日 · x^2 - 4x - 12=color(green)((x-6)(x+2) color(red)(x^2 - 4x - 12 We can Split the Middle Term of this expression to factorise it In this technique, if we have to factorise an …

2016年1月28日 · Sort the x terms and y terms so that they are near one another. x^2+4x+y^2+6y=-4 Now, complete the square for each part by adding constants. Remember …