Question

The sum of two numbers is 5 and their product is -84. Find these numbers.

Answer 1

Answer:

the two numbers are 7,12

since, 12+(-7)=5

12×(-7)=-84

Step-by-step explanation:

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Answer 2

Answer:

Let the two number is a and b.there sun is equal to 5

MATHEMATICALLY a+b =5 (equation 1)

And the product of two number is = -84

MATHEMATICALLY ab= -84

a= -84/b

put the value of a in equation 1

-84/b+b=5

-84+b²=5b

b²-5b-84=0

b²-12b+7b-84=0

b(b-12)+7(b-12)=0

(b-12)(b+7)=0

b-12=0

b=12

b+7=0

b= -7

put the first value of b in equation 1

a+b=5

a+12=5

a= -7

Or put the second value of b in equation 1

a+b=5

a-7=5

a=12

THERE ARE TWO NUMBERS 12 AND -7 ANSWER