Asked by BunnySayRawr
For questions 17-21, simplify the expression.
17. 8t^5 x 8t^5
18. -x(6x -7)
19. 5k^2(-6k^2-2k+6)
20. (3k+2)(k-3)
21. (-3y+2)(y+3)
Please help
17. 8t^5 x 8t^5
18. -x(6x -7)
19. 5k^2(-6k^2-2k+6)
20. (3k+2)(k-3)
21. (-3y+2)(y+3)
Please help
Answers
Answered by
John
I would be happy to check your answers.
Remember when multiplying you multiply the coefficients and add the exponents.
4x^3 x 5x^4 = 20x^7
for 18 and 19 you will use the distributive property.
Multiply what is in front times each term inside the ( )
use the rule stated above.
Remember an x is really x^1
for 20 and 21
multiply 3k times k and -3
multiply 2 times k and -3
combine like terms.
Like terms have the same exponents.
ex: 3x^4 + 5x^4 = 8x^4
Remember when multiplying you multiply the coefficients and add the exponents.
4x^3 x 5x^4 = 20x^7
for 18 and 19 you will use the distributive property.
Multiply what is in front times each term inside the ( )
use the rule stated above.
Remember an x is really x^1
for 20 and 21
multiply 3k times k and -3
multiply 2 times k and -3
combine like terms.
Like terms have the same exponents.
ex: 3x^4 + 5x^4 = 8x^4
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