Question

if the simple interest of 600 increases by rs 39 when thle rate % increases by 4% fund this time​

Answer 1

Principal = Rs 2000

Time = 4 years

Interest = Rs 400

Now, Interest=

100

Principal×Rate×Time

400=

100

2000×R×4

R=

2000×4

400×100

Answer 2

Answer:

identities of factorisation are

(a + b)²= a² + b² + 2ab

(a - b)² = a² + b² -2ab

a² + b² = (a+b)(a-b)

(x + a)(x + b)= x² + x(a + b) + ab

hope it helps