Question

If a/b=3/4 then 5a²+2b²/5a²-2b²=?

Answer 1

5*3*3+2*4*4/5*3*3-2*4*4

5*9+2*16/5*9-2*16

45+32/45-32

77/13

Answer 2

Answer:

77/13

Step-by-step explanation:

a/b=3/4

so, we can say that,

a=3k

b=4k

5a²+2b² = 5(3k)²+2(4k)² = 45k+32k = 77k

5a²-2b² = 5(3k)²-2(4k)² = 45k-32k. = 13k

thus,

77k/13k = 77/13

hope it helps