0

Guest

Courses New

Find the value of “x” in the polynomial 2a 2 + 2xa + 5a + 10 if (a + x) is one of its factors.

Find the value of “x” in the polynomial 2a2 + 2xa + 5a + 10 if (a + x) is one of its factors.

 

Grade:12

1 Answers

Harshit Singh
askIITians Faculty 5963 Points
2 years ago
Dear Student

Say, f(a) = 2a^2+ 2xa + 5a + 10

Since, (a + x) is a factor of 2a^2+ 2xa + 5a + 10,
f(-x) = 0

So, f(-x) = 2x^2– 2x^2– 5x + 10 = 0

Or, -5x + 10 = 0

Thus, x = 2

Thanks

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

Other Related Questions on 10 grade maths

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More