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ALGEBRA ALGEBRA Squaring both sides, х x? + 4 2. If x + - = 4; X+0, then find the value of x2 + X3 (tol 8 (2) 3 8 *-*-2-2 **** (1) 21 1) ) 45 + = 4 2 X (3) 4 8 (4) 51 8 1 7. 5. If 7x - = 14, then the value of x3 2x is : 8x3 4 Sol. (3) X+ - = 4 X (1) 9 (3) 27 (2) 8 (4) 11 x² + 4 = 4 х 7 Sol. (4) 7x - 2x 2 = 14 1 = = Dividing both sides by 7, (Look: *3 = ?) 8x3 = x + 4 = 4x = x2 - 4x + 4 = 0 (x - 2)2 = 0 = x= 2 1 1 x2 41 + MAX x3 HVOR 1 6, p=0, then find the value of = 4 + 88 1 = X- = 2 2x Зр 13. If p2 - 3p+3 Cubing both sides, 1 1 x3 1 3xx х 2x 3 p+- р 2 (-2x): = 8 8x3 Hala (1) 20 (3) 22 a (2) 21 →43 1 3 x2 = 8 8x3 2 (4) 25 3p- les put the 3 1 ... 11 ...
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