Question

a
Expand (x²+x-2) (x²-x+2)​

Answer 1

Answer:

X^4 + X^2 + 2X - 4

Step-by-step explanation:

=> x^4 + x^3 - 2x - x^3 - x^2 + 2x + 2x^2 + 2x - 4

=> x^4 + x^2 + 2x - 4

OR

=> x ( x^3 + x + 2 ) - 4

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Answer 2

Answer:

x4-x2+4x-4

Step-by-step explanation:

(x2+x-2)x2-(x2+x-2)x +(x2+x-2)+2

= x4+x3-2x2-x3-x2+2x+2x2+2x-4

= x4-x2+4x-4