Mathematics for IGCSE & O level - Algebraic Manipulation (Section 7 - No. 47)
Which of the following is the simplified form of 5a * 2b?
7ab
10ab
7a + b
10a + b
Giải thích
Multiplying the coefficients: 5 * 2 = 10. Then include variables: a*b = ab. So 10ab