Sagot :
SUBTRACTING POLYNOMIALS
QUESTION
1. (5a+4) - (3a+1) = ?
- change the sign of the subtrahend and proceed to addition
= 5a+4 + (-3a -1)
- combine like terms
= (5a - 3a) + (4-1)
= 2a + 3
2. (-2x - 4) - (2x + 4) = ?
= (-2x - 4) - (2x+4)
- change the sign of the subtrahend and proceed to addition
= (-2x-4) + (-2x-4)
- combine like terms
= (-2x-2x) + (-4-4)
= (-4x) + (-8)
= -4x-8
ANSWER
1. 2a+3
2. -4x-8