Any two numbers whose product is 84 and their sum is 20.
Please answer step by step.
Answers
Answered by
2
Step-by-step explanation:
14 × 6= 84
14+ 6 = 20
hope it's useful to you
Answered by
1
Step-by-step explanation:
given,
a+b= 20
ab= 84
we know that
(a-b)²= (a+b)²-4ab
(a-b)²=(20)²-4×84
(a-b)²= 400-336
(a-b)²= 64
(a-b)²=8²
a-b= 8
now,
a+b=20
a-b=8
on adding both eq.
2a= 28
a= 14
on subtracting both eq.
2b= 12
b= 6
hence the no is 6 and 14
.......666......
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