CameraIcon

SearchIcon

MyQuestionIcon

2

You visited us 2 times! Enjoying our articles? Unlock Full Access!

Factors

Question 86 i...

Question

Question 86 (ii)

Using suitable identities, evaluate the following:

$(49)^{2}$

Open in App

Solution

We have,
$(49)^{2} = (50 - 1)^{2}$
$= (50)^{2} + 1^{2} - 2 \times 50 \times 1$ [using the identity, $(a - b)^{2} = a^{2} + b^{2} - 2 a b$ ]
$= 2500 + 1 - 100 = 2401$

Suggest Corrections

thumbs-up

0

Similar questions

Question 86 (ii)

Using suitable identities, evaluate the following:

$(49)^{2}$

Question 86 (i)

Using suitable identities, evaluate the following:

$(52)^{2}$

Question 86 (iii)

Using suitable identities, evaluate the following:

$(103)^{2}$

Question 86 (iv)

Using suitable identities, evaluate the following:

$(98)^{2}$

Question 86 (xiii)

Using suitable identities, evaluate the following:

$(9.9)^{2}$

View More

Join BYJU'S Learning Program

explore_more_icon

Explore more

Standard IX Mathematics

Join BYJU'S Learning Program

CrossIcon