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Factorization — MATHS STD 8 — Question

Gujarat BoardEnglish MediumSTD 8MATHSFactorization1 Mark
MCQ
The value of $49^{2}$ is
  • ✓
    $(50)^{2}-2(50)(1)+(1)^{2}$
  • B
    $(50)^{2}+2(50)(1)+(1)^{2}$
  • C
    $(50)^{2}-(1)^{2}$
  • D
    $(\mathrm{d})(50)^{2}+(1)^{2}$
✓

Answer

Correct option: A.
$(50)^{2}-2(50)(1)+(1)^{2}$
a
$49^{2}=(50-1)^{2}$
$=(50)^{2}-2(50)(1)+(1)^{2}$

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