hello. mate plz help plzme
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Here your answer goes
Question :- 1
Step :- 1
Let the age of first friend be x
Second friend be 20 - x
Step :- 2
According to Question ,
Four years ago product of their age was 48
( x - 4 ) ( 20 - x - 4 ) = 48
( x -4 ) ( 16 - x ) = 48
x^2 - 16 - 64 + x = 48
x^2 - 20 + 112 = 0 ----->> 1
Step :- 3
Compare equation 1 with General form of Quadratic equation
a = 1
b = -20
C = 112
Step :- 4
Therefore , D = b^2 - 4ac
(-20)^2 - 4 * 1 * 112
400 - 448
=>> -48 is smaller than 0
So , there are not zero real roots
Thus , the given situation is not possible
Question :- 2
for this refer to the link of my previous answer
brainly.in/question/6285553
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