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11 × 1 – 2 = 9 9 × 2 – 3 = 15 15 × 3 – 4 = 41 41 × 4 – 5 = 159 159 × 5 – 6 = 789
(150% of 950) ÷ ? = 25
46% of 13/92 × 24/91 × 3500 =?
√ [? x 11 + (√ 1296)] = 16
4387897 – 3286871 – 51926 = ?
√10000 × √8100 - (50)² = √(?) + (80)²
280 – 70 × 14 ÷ 5 = ? – 21 of 3
?% of (√196) × 24 + 344 = 428
?% of 320 - 69 = 123
What are the values of k, if the roots of the equation x² + 2(k - 4)x + 2k = 0 are equal?
