Math, asked by savitrirawat211258, 10 months ago

my product is 21, my difference is 4​

Answers

Answered by curlcandy
5

find the factors of 21

1*21=21

3*7=21

now check the difference between 1 and 21 & 3 and 7

21-1=20

7-3=4

so answer is 7and3

Hope it helps

Plz mark as brainliest

Answered by anujvd
1

Answer:

x \times y = 21 \\ x =  \frac{21}{y}  \\ x - y = 4 \\  \frac{21}{y}  - y = 4 \\ 21 -  {y}^{2}  = 4y \\ y {}^{2}  + 4y - 21 = 0 \\  {y}^{2}  + 7y - 3y - 21 = 0 \\ y(y + 7) - 3(y + 7) = 0 \\ (y + 7)(y - 3) = 0 \\ y + 7 = 0 \: or \: y - 3 = 0 \\ y =  - 7or \: y = 3 \\ x =  \frac{21}{ - 7}  \: or \: x =  \frac{21}{3}  \\ x =  - 3 \: or \: x = 7 \\ ans \:  = ( - 7) \: and \: ( - 3 ) \: or \: 7 \: and \: 3

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