Advertisements
Advertisements
प्रश्न
The factors of x2 – 4 are ______.
विकल्प
(x – 2), (x – 2)
(x + 2), (x – 2)
(x + 2), (x + 2)
(x – 4), (x – 4)
Advertisements
उत्तर
The factors of x2 – 4 are (x + 2), (x – 2).
Explanation:
We have,
x2 – 4 = x2 – 22
= (x + 2)(x – 2) ...[∵ a2 – b2 = (a + b)(a – b)]
Hence, (x + 2), (x – 2) are factors of x2 – 4.
APPEARS IN
संबंधित प्रश्न
Identify the term, their coefficients for the following expression:
7x2yz − 5xy
Write the degree of the following polynomial: – 8mn6+ 5m3n
Simplify: -5ax2 + 7ax2 – 12ax2
Add : - 3a + 2b and 3a + b
Find the sum of: 3a + 5b + 2c, 2a + 3b-c and a + b + c.
Subtract the second expression from the first:
a2 + ab + c2, a2 - d2
Find the numerical co-efficient of the following term:
2ab
The value of (a + b)2 + (a – b)2 is ______.
38x3y2z ÷ 19xy2 is equal to ______.
The terms of expression 4x2 – 3xy are ______.
