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Factorisation — MATHEMATICS STD 9 — Question

ICSE BoardEnglish MediumSTD 9MATHEMATICSFactorisation1 Mark
MCQ
Assertion (A) : $a^3-2 \sqrt{2} b^3$ can be factorised as $(a-2 \sqrt{2})\left(a^2+\sqrt{2} a b+2 b^2\right)$
Reason (R) : $x^3-y^3=(x-y)\left(x^2+x y+y^2\right)$.
  • A
    A is true, R is false
  • ✓
    A is false, R is true
  • C
    Both A and R are true
  • D
    Both A and R are false.
✓

Answer

Correct option: B.
A is false, R is true
B

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