Jwb dg cara kuadrat sempurna 4X kuadrat + 8X - 3 = 0 (Jwbnya dg caranya yaa).... Question from @Gitakook

November 2018 1 10 Report

Jwb dg cara kuadrat sempurna
4X kuadrat + 8X - 3 = 0
(Jwbnya dg caranya yaa)

Abdulhady $4x^2+8x-3=0\\4x^2+8x=3\\x^2+2x= \frac{3}{4} \\x^2+2x+1= \frac{3}{4} +1\\\\(x+1)^2= \frac{7}{4} \\x+1=\pm \sqrt{ \frac{7}{4}} \\ x=-1\pm \frac{ \sqrt{7} }{2} \\\\\boxed{\boxed{x=-1\pm \frac{ \sqrt{7} }{2} }}$

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