Find the value of ab if a - b = 3 and a2 + b2 = 29.
A. 10
B. 12
C. 15
D. 18
Answer:A
Find the value of ab if a - b = 3 and a2 + b2 = 29.
A. 10 B. 12 C. 15 D. 18
Explanation: a2 + b2) - (a - b)2 = 2ab= 29 minus 9 equals 20,ab = ten