\frac{(2.39)^2-(1.61)^2}{2.39-1.61}=?

Decimals and Fractions Practice Test 4

Question : 20 of 40

Marks: +1, -0

{(2.39)^2-(1.61)^2}/{2.39-1.61}=?

Solution:

{(2.39)^2-(1.61)^2}/{2.39-1.61}

={({2.39+1.61})({2.39-1.61})}/{2.39-1.61}

= 2.39 + 1.61 = 4

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