II. Directions: Add the following polynomials. (Show your solution) 10pts - 1. (2y2 + 7y - 4) + (y2 -13y -3 ) 2. (-3x2 + x) + (4x2 + 6x) 3. ( 5y2 – 2y - 1) + ( 3y2 - 5y + 7) 4. (x2 - 3) + ( 2x2 + 10x) 5. (y2 + 4y - 8) + (y2 + 2y - 2) -
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II. Directions: Add the following polynomials. (Show your solution) 10pts - 1. (2y2 + 7y - 4) + (y2 -13y -3 ) 2. (-3x2 + x) + (4x2 + 6x) 3. ( 5y2 – 2y - 1) + ( 3y2 - 5y + 7) 4. (x2 - 3) + ( 2x2 + 10x) 5. (y2 + 4y - 8) + (y2 + 2y - 2) -
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Answer:
1. 3y2−6y−7
2. x2+7x
3. 8y2−7y+6
4. 3x2+10x−3
5. 2y2+6y−10
Explanation
1. =2y2+7y+−4+y2+−13y+−3
=(2y2+y2)+(7y+−13y)+(−4+−3)
=3y2+−6y+−7
2. =−3x2+x+4x2+6x
=(−3x2+4x2)+(x+6x)
=x2+7x
3. =5y2+−2y+−1+3y2+−5y+7
=(5y2+3y2)+(−2y+−5y)+(−1+7)
=8y2+−7y+6