Using identities, evaluate $71^{2}$

5041

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

5921

No worries! We‘ve got your back. Try BYJU‘S free classes today!

5771

No worries! We‘ve got your back. Try BYJU‘S free classes today!

5931

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A $5041$
$71^{2} = (70 + 1)^{2}$
$= (70)^{2} + 2 \times 70 \times 1 + (1)^{2}$
Using : $(a + b)^{2} = a^{2} + 2 a b + b^{2}$
$= 4900 + 140 + 1 = 5041$

Suggest Corrections

Similar questions

71^{2}

71^{2}

Using identities, evaluate: $71^{2}$

71^{2}

87^{2}

Join BYJU'S Learning Program