(7.5 \times 7.5 + 37.5 + 2.5 \times 2.5) is equal to

Decimals and Fractions Practice Test 5

Question : 24 of 30

Marks: +1, -0

(7.5 × 7.5 + 37.5 + 2.5 × 2.5)

is equal to

Solution:

7.5 × 7.5 + 37.5 + 2.5 × 2.5

= 7.5 × 7.5 + 2 × 7.5 × 2.5 + 2.5 × 2.5

= (7.5 + 2.5)^2 = (10)^2 = 100

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