What is the value of (3.25 × 3.25 − 1.75 × 1.75) ÷ 1.5?
Correct answer B. 5
Explanation
Using a² − b² = (a + b)(a − b): (3.25 + 1.75)(3.25 − 1.75) = 5 × 1.5. Dividing by 1.5 gives 5.
Answer checked How we write and check questions
Tip: press A, B, C or D to answer, and N for the next question.
Advertisement
More Simplification questions
See allWhat is the approximate value of 39.97% of 799.8 + 25.02 × 11.99?
Correct answer D. 620
What number should replace the blank in ____ ÷ 12 + 18 = 45?
Correct answer D. 324
Advertisement
What is the value of (1 − 1/3)(1 − 1/4)(1 − 1/5) … (1 − 1/20)?
Correct answer D. 1/10
What is the value of (0.6 × 0.6 − 0.4 × 0.4) ÷ (0.6 − 0.4)?
Correct answer B. 1
Discussion