Question

The equation of p and r are *



y +4 = 0 , x + 2 = 0

y - 4 = 0 , x + 2 = 0

y +4 = 0 , x - 2 = 0

y - 4 = 0 , x - 2 = 0​

Answer 1

Step-by-step explanation:

y+4=0 ,x-2=0

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Answer 2

Answer:

Let a,b,c,d be the roots of the polynomial.

So, (a+b+c+d)=−p

(abc+abd+acd+bcd)=−r

abcd=5

Now, Arithmetic Mean ≥ Geometric Mean

ie,

4

(a+b+c+d)

≥(abcd)

1/4

=5

1/4

⇒−p≥4×5

1/4

also,

4

(abc+abd+acd+bcd)

≥(abcd)

3/4

=5

3/4

⇒−r≥4×5

3/4

So, pr≥4

2

×5=80

ie, minimum value of pr=80

Step-by-step explanation:

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