## 1.6.3 Quadratic Equations, SPM Paper 2 (Long Questions)

Question 9:Solve the following quadratic equation:4x (x + 4) = 9 + 16xSolution: 4x( x+4 )=9+16x 4 x 2 +16x=9+16x 4 x 2 −9=0 ( 2x ) 2 − 3 2 =0 ( 2x+3 )( 2x−3 )=0 2x+3=0 or 2x−3=0 2x=−3 2x=3 x=− 3 2 x= 3 2 Question 10:Solve the following quadratic equation:(x … Read more