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Factorize abx2 + 8y - 4bx - 2axy

Mathematics
JAMB 1985
Factorize abx2 + 8y - 4bx - 2axy
  • A. (ax - 4)(bx - 2y)
  • B. (ax + b)(x - 8y)
  • C. (ax - 2y)(bx - 4)
  • D. (bx - 4)(ax - 2y)
  • E. (abx - 4)(x - 2y)
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Correct Answer: Option A
Explanation
abx2 + 8y - 4bx - 2axy = (abx2 - 4bx) + (8y - 2axy)

= bx(ax - 4) 2y(ax - 4) 2y(ax - 4)

= (bx - 2y)(ax - 4)
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