8.If one root of the equation Px2-14x +8 =0 is six times the other, th

1.	8.If one root of the equation Px2-14x +8 =0 is six times the other, then the value of P will be(a) P=3 (b) P=5 c) P=7 (d) none of these
Answer» Step-by-step explanation: LET the roots be a and 6A px²-14x+8=0 1)a+6a=14/p 2)a(6a)=8/p Solve 1) 7a=14/p a=2/p Substitute a in 2) 6a²=8/p 3a²=4/p 3(2/p)²=4/p 3(4/p²)=4/p p=3

8.If one root of the equation Px2-14x +8 =0 is six times the other, then the value of P will be(a) P=3 (b) P=5 c) P=7 (d) none of these

Answer»

Step-by-step explanation:

LET the roots be a and 6A

px²-14x+8=0

1)a+6a=14/p 2)a(6a)=8/p

Solve 1)

7a=14/p

a=2/p

Substitute a in 2)

6a²=8/p

3a²=4/p

3(2/p)²=4/p

3(4/p²)=4/p

p=3

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8.If one root of the equation Px2-14x +8 =0 is six times the other, then the value of P will be(a) P=3 (b) P=5 c) P=7 (d) none of these ​

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8.If one root of the equation Px2-14x +8 =0 is six times the other, then the value of P will be(a) P=3 (b) P=5 c) P=7 (d) none of these