17. What is the sum of 3x2 - 11x + 12 and 18x2 +20%-100?
a. 15x2 + 9x -- 88
b. 21x2 + 9x - 88
c. 21x2 + 31x + 88 d. 15x2 +31x + 88
18. If you have (100x3 - 5x+3) pesos in your wallet and you spent (80x3 - 2x2 +9) pesos in buying food, how much
money left in your pocket?
a. 20x3 + 2x2 - 5x - 6 b. 20x3 - 2x2 - 5x + 12 c. 180x3 + 2x2 - 5x - 6
c. 180x3 + 2x2 - 5x - 6 d. 180x3 - 2x - 5x + 12
19. What must be added to 3x + 10 to get a result of 5x - 3?
a. 2x + 7
b. 2x - 13
c. - 2x - 13
d. - 2x - 13
pakisagot desperado ako ngayon thanks
a. 15x2 + 9x -- 88
b. 21x2 + 9x - 88
c. 21x2 + 31x + 88 d. 15x2 +31x + 88
18. If you have (100x3 - 5x+3) pesos in your wallet and you spent (80x3 - 2x2 +9) pesos in buying food, how much
money left in your pocket?
a. 20x3 + 2x2 - 5x - 6 b. 20x3 - 2x2 - 5x + 12 c. 180x3 + 2x2 - 5x - 6
c. 180x3 + 2x2 - 5x - 6 d. 180x3 - 2x - 5x + 12
19. What must be added to 3x + 10 to get a result of 5x - 3?
a. 2x + 7
b. 2x - 13
c. - 2x - 13
d. - 2x - 13
pakisagot desperado ako ngayon thanks
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Answer:
17. b. 21x2+9x−88
18. c. 180x^3 + 2x^2 - 5x - 6
19. b. 2x - 13
Step-by-step explanation:
17. Combine like terms
3x2−11x+12+18x2+20x−100
=21x2+9x−88
18. (100x3 - 5x+3) - (80x3 - 2x2 +9)
= 100x3 - 5x+3 + 80x3 + 2x2 -9
=180x^3 + 2x^2 - 5x - 6
19. (3x + 10 ) + ( 2x - 13)
=5x - 3
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