Question

7x²+3x-4 by completing the square method

Answer 1

Step-by-step explanation:

7x^2 + 3x _4 =0

7x^2 /7 +3x/7 _4/7 =0

x^2 +3x/7 =4/7

x^2 + 3x/7 +(3/14) ^2= 4/7+ (3/14 ) ^2

(x+3/14)^2 =4/7+9/196

(x+3/14)^2 = 112+9/196

(x+3/14)^2=121/196

x+3/14 =√121/196

x+3/14=11/14

x= 11/14+3/14

x=11+3/14

x=14/14 x=1

x= 11/14_3/14

x=11_3/14

x=8/14

x= 4/7