High Order Thinking Skills (HOTS)
26. Which value of b would make y2 + by – 24
factorable ?
(a) 14
(c) 5
(b) 11
(d) 25
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Answer:
y² + by = 2y = 0
24 = -(2³ x 3)
= -(4 × 6) 6 - 4 = 2
= -(12 x 2) 12 - 2 = 10
= -(8 x 3) 8 - 3 = 5
= -(24 × 1) 24 - 1 = 23
So, b = 5 would make eqn factorizable. Approach is more important than the solution.
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