anonymous
  • anonymous
I need some algebra help! 1. d^2 + 18d + 81 A) (d+9)(d-9) B) (d+9)^2 C) (d-81)(d-1) D) (d-9)^2 2. d^2 - 13d + 30 A) (d+10)(d+3) B) (d+10)(d-3) C) (d-10)(d+3) D) (d-10)(d-3) 3. r^2 - 49 A) (r-7)(r+7) B) (r+7(r+7) C) (r-7)(r-7) D) (r-7)(r+9)
Mathematics
katieb
  • katieb
See more answers at brainly.com
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Get this expert

answer on brainly

SEE EXPERT ANSWER

Get your free account and access expert answers to this
and thousands of other questions

jango_IN_DTOWN
  • jango_IN_DTOWN
1. d^2 + 18d + 81=d^2 +9d +9d +81=d(d+9)+9(d+9)=(d+9)^2
jango_IN_DTOWN
  • jango_IN_DTOWN
hints 81=9*9
hwyl
  • hwyl
LOOKS LIKE YOU NEED TO FIGURE OUT THE MIDDLE AND LAST TERM THINK OF TWO NUMBERS THAT ADDS UP TO 18 AND YIELDS 81 WHEN MULTIPLIED TO EACH OTHER

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

anonymous
  • anonymous
A C B C
anonymous
  • anonymous
@jango_IN_DTOWN So number 1 is B?
anonymous
  • anonymous
ignore the last c ;)
jango_IN_DTOWN
  • jango_IN_DTOWN
yes
jango_IN_DTOWN
  • jango_IN_DTOWN
2.d^2 - 13d + 30 i will give hints -13=-10+(-3) and 30=(-10)*(-3)
jango_IN_DTOWN
  • jango_IN_DTOWN
3. 49=7^2 and so use the formula of a^2-b^2= (a+b)(a-b)

Looking for something else?

Not the answer you are looking for? Search for more explanations.