SSC CHSL 4 Mar 2018 Shift 3 Paper

Section: English Language

Question : 2 of 100

Marks: +1, -0

Simplify: (213 x 213 + 187 x 187)

Solution:

Expression : (213 × 213 + 187 × 187)
=

(200 + 13) ^2 + (200 − 13)^ 2

[(200) ^2 + (13)^ 2 + 2(200)(13)]

+ [(200)^ 2 + (13)^ 2 − 2(200)(13)]

[2 × (200)^ 2 ] + [2 × (13) ^2]

80000 + 338 = 80338

Go to Question:

Prev Question

Next Question