1) x 2 = 25 a) x=5 and x=-5 b) x=5 c) x=-5 d) x=25 e) x=25 and x=-25 f) x=-25 2) x3 = -64 a) x=4 and x=-4 b) x=4 c) x=-4 d) x=8 e) x=-8 3) x2 = - 9 a) x = 3 b) x = -3 c) x = 3 and x = -3 d) x = 6 e) not possible 4) x3 = 8 a) x = -2 and x = 2 b) x = 2 c) x = -2 d) x = 4 e) x = -4 5) x2 = 144 a) x = 12 b) x = -12 c) x = 12 and x = -12 6) x2 = 9 a) x = 3 b) x = -3 c) not possible d) x = 3 and x = -3 e) x = 6 f) x = 11 7) x2 = 36 a) x = 6 b) x = -6 c) x = -5 d) x = 6 and x = -6 e) x = 5 and x = -5 f) x = 4 and x = -4 8) x2 = 81 a) x=3 and x=-3 b) x=9 and x=-9 c) x=5 and x=-5 d) x=11 and x=-11 e) x=4 and x=-4 9) x2 = 196 a) x = 10 b) x = 11 c) x = 12 d) x = 13 e) x = 14 f) x = 15 10) x2 = 225 a) x = 14 b) x = -14 c) x = 14 and x=-14 d) x = 15 e) x = -15 f) x = 15 and x=-15

Quick Maths - Square Roots and Cube Roots

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