Math, asked by davidjannu3172, 10 months ago

Using suitable identity, evaluate (8.9)square

Answers

Answered by prameelaguruprasad

5

Answer:

79.21

Step-by-step explanation:

(8.9)^2=(8+0.9)^2

(a+b)^2=a^2+2ab+b^2

=8^2+2*8*0.9+0.9^2

=64+14.4+0.81

=79.21

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