If 8a - b² = 24, 8b + b² = 56, what is a + b?

Challenger App

No.1 PSC Learning App

★

★

★

★

★

1M+ Downloads

8a - b²=24, 8b + b² = 56 ആയാൽ a + b എത്ര?

A3

B7

C8

D10

Answer:

D. 10

Read Explanation:

8a - b²=24.......(1) , 8b + b² = 56 ......(2) (1) + (2) 8(a + b) = 80 a + b = 80/8 = 10

Read more in App

Related Questions:

If a + b + c = 6, $a^2 + b^2 + c^2 = 30$ and $a^3 + b^3 + c^3 = 165,$ then the value of 4abc is:

If a = 355, b = 356, c = 357, then find the value of a³ + b³+ c³ - 3abc.

The sum of the reciprocals of Rehman’s ages, (in years) 3 years ago and 5 years from now is 1/3. Find his present age?

An aeroplane is moving at a constant altitude 'h'. At 10:00 AM, it is seen at an elevation of 30°. 1 minute later, it is observed at an elevation of 60°. If the speed of the plane is 960 km/h, then find 'h'.

x # y = xy + x + y ആയാൽ 5#4 - 1#2 എത്ര?