Question

the sun of the three number in AP is 21 and their product is 231 find the number

Answer 1

Here's the answer
Mark brainliest if possible

Answer 2

Let the three numbers be A-d,A,A+d
A+A-D+A+A+D= 21
3A = 21
A = 21/3= 7
A/Q,
(A-D)A(A+D) = 231
a(a²-d²) = 231
7(49-d²) = 231
7d² = 343-231= 112
d² = 16
d = 4
Thus,
A= 7 and D = 4