pls give me a right ans. in attech file with explaination ......
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Answers
Step-by-step explanation:
this is the ans of first q..
Answer:
Small number
Step-by-step explanation:
Let x be the small number and y be the large number
y^2 - x^2 = 88 ...............(1)
y = 2x-5 ......................(2)
Substitution the value of y in equation (1)
(2x-5)^2 - x^2=88
4x^2 - 20x + 25 - x^2 = 88
3x^2 - 20x + 25 = 88
3x^2 - 20x +25 - 88 = 0
3x^2 -20x - 63 = 0
3x^2 - 27x + 7x - 63 = 0
3x(x - 9) + 7(x - 9) = 0
(3x + 7) - (x-9) = 0
3x+7 =0
3x = -7
x= -7/3
x - 9 =0
x = 9
x = -7/3 is not possible
Therefore x = 9
y = 2x - 5
y = 2(9) - 5
y = 18 - 5
y = 13
Smaller number = 9
Larger number = 13