Subtract the second polynomial from the first. i. 5x2 – 2y + 9 ; 3X

1.	Subtract the second polynomial from the first. i. 5x2 – 2y + 9 ; 3X2 + 5y – 7 ii. 2x2 + 3x + 5 ; x2 – 2x + 3
Answer» i. (5x²– 2y + 9) – (3x²+ 5y – 7) = 5x² – 2y+ 9 – 3x² – 5y + 1 = 5x² – 3x² – 2y – 5y + 9 + 7 = 2x² – 1y + 16 ii. (2x² + 3x + 5) – (x² – 2x + 3) = 2x² + 3x + 5 – x² + 2x – 3 = 2x² – x² + 3x + 2x + 5 – 3 = x²+ 5x + 2

Subtract the second polynomial from the first. i. 5x2 – 2y + 9 ; 3X2 + 5y – 7 ii. 2x2 + 3x + 5 ; x2 – 2x + 3

Answer»

i. (5x²– 2y + 9) – (3x²+ 5y – 7)

= 5x² – 2y+ 9 – 3x² – 5y + 1

= 5x² – 3x² – 2y – 5y + 9 + 7

= 2x² – 1y + 16

ii. (2x² + 3x + 5) – (x² – 2x + 3)

= 2x² + 3x + 5 – x² + 2x – 3

= 2x² – x² + 3x + 2x + 5 – 3

= x²+ 5x + 2