3.3.5 SPM Praktis, Sistem Persamaan, (Soalan 9)
Soalan 9:Selesaikan persamaan-persamaan serentak:2(x – y) = x + y – 1 = 2×2 – 11y2[5 markah]Penyelesaian:2(x – y) = x + y – 12x – 2y = x + y – 1x= 3y – 1 —- (1)x + y – 1 = 2×2 – 11y22x2– 11y2 – x – y+ 1 = 0 —- … Read more