CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Factors

Question 7iUs...

Question

Question 7(i)
Using $a^{2} - b^{2} = (a + b) (a - b),$ find
$51^{2} - 49^{2}$

Open in App

Solution

$51^{2} - 49^{2} = (51 + 49) (51 - 49)$
$[U s i n g i d e n t i t y (a - b) (a + b) = a^{2} - b^{2}]$
$= 100 \times 2 = 200$

Suggest Corrections

thumbs-up

0

Similar questions

Q. Question 7(i)
Using

a^{2} - b^{2} = (a + b) (a - b),

51^{2} - 49^{2}

Using $a^{2} - b^{2} = (a + b) (a - b),$ find
$51^{2} - 49^{2}$ .

a^{2} - b^{2} = (a + b) (a - b)

51^{2} - 49^{2}

Q. Question 7(ii)
Using

a^{2} - b^{2} = (a + b) (a - b),

(1.02)^{2} - (0.98)^{2}

Q. Question 7(iv)
Using

a^{2} - b^{2} = (a + b) (a - b),

{12.1}^{2} - {7.9}^{2}

View More

Join BYJU'S Learning Program

explore_more_icon

Explore more

Standard IX Mathematics

Join BYJU'S Learning Program

CrossIcon