Question

a) 3x2 - y2 +22–2xy-4xz
b) x4 + x2 + 1​

Answer 1

Answer:

b) x^4+x^2+1

$= {( {x}^{2} + 1)}^{2} - {x}^{2}$

$= ( { {x}^{2} + x + 1)}( { {x }^{2} - x + 1) }$

Answer 2

Answer:

(a):- x4 +x2+1

Step-by-step explanation:

• x4+2x^2-x^2+1
• (x^4 +2x^2+1)-x^2
• [(x^2)^2+2x^2+(1)^2]-x^2
• (x^2+1)^2-x^2
• (x^2+1+x)(x^2+1-x)
• Hope its help you