What is the value of \frac{ 2.70\times2.70+4.30\times4.30+8.60\times2.70}{2.70+4.30}?

Simplification Test 8

Question : 18 of 40

Marks: +1, -0

What is the value of

{ 2.70×2.70+4.30×4.30+8.60×2.70}/{2.70+4.30}

Solution:

{ 2.70×2.70+4.30×4.30+8.60×2.70}/{2.70+4.30}

={ (2.70)^2 +(4.30)^2 +2×4.30×2.70}/{2.70+4.30}

={ (2.70 + 4.30)^2 }/{2.70+4.30}

= 2.70 + 4.30 = 7.00

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