Question

Use the identity and find the square of 189

Answer 1

Answer:

By using given identity,

189 = (200-11)

(200-11)^2 = (200)^2 +(11)^2 - 2×200×11

= 40000+121-4400

= 40121-4400

= 35721

Answer 2

Answer:

♨Solution :-

$\red{ \longrightarrow}189 = (200 - 11) ^{2}$

$\red{⇛}40000 - 2 \times 200 \times 11 + 11^{2}$

$\red{⇛}40000 - 4400 + 121$

$\red{⇛} \underline \green{{35721}}$

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