If (a + b)2 - 2(a + b) = 80 and ab = 16, then what can be the value of 3a - 19b?
A. -16
B. -14
C. -18
D. -20
Answer: Option B
Solution(By Examveda Team)
By putting a = 8, b = 2(8 + 2)2 - 2(8 + 2) = 80
8 × 2 = 16
So, 3a - 19b
= 3 × 8 - 19 × 2
= -14
This Question Belongs to Arithmetic Ability >> Algebra
Related Questions on Algebra
If $$p \times q = p + q + \frac{p}{q}{\text{,}}$$ then the value of 8 × 2 is?
A. 6
B. 10
C. 14
D. 16
A. $$1 + \frac{1}{{x + 4}}$$
B. x + 4
C. $$\frac{1}{x}$$
D. $$\frac{{x + 4}}{x}$$
A. $$\frac{{20}}{{27}}$$
B. $$\frac{{27}}{{20}}$$
C. $$\frac{6}{8}$$
D. $$\frac{8}{6}$$
Join The Discussion