Mathematics, 19.12.2019 07:31 kkmwkk031

The following steps are used to rewrite the polynomial expression (x + 4y + 2)(x - 7y).
step 1: x(x – 7y) + 4y(x - 7y) + z(x - 7y)
step 2: x2 - 7xy + 4yx - 28y2 + zx - 7zy
step 3: x2 - 7xy + 4xy - 28y2 + xz – 7yz
step 4: x2 – 3xy - 28y2 + xz - 7yz
identify the property used in each of the steps:
step 1:

Answers: 1

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 17:30, Lovergirl13

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

Answers: 3

continue

Mathematics, 22.06.2019 00:30, aylineorozco836

If m_b=mzd= 43, find mzc so that quadrilateral abcd is a parallelogram o 86 137 o 129 43 description

Answers: 1

continue

Mathematics, 22.06.2019 01:30, venny23

The unpaid balance on a mastercard charge was $1,056.23. during the month, payments of $300 and $250 were made and charges of $425 and $274.16 were added. if the finance charge is 1.2% per month on the unpaid balance, find the new balance at the end of the month. $1,205.39 $1,218.06 $918.06 $1,768.06

Answers: 2

continue

Mathematics, 22.06.2019 01:30, nickeymcorrea

The pyraminx is a rubik's cube-type toy in the shape of a tetrahedron. the pyraminx shown below has edges 15\,\text{cm}15cm long and vertical height h=12.2\,\text{cm}h=12.2cm. the triangle drawn with dashed lines is a right triangle. what is the distance rr? round your answer to the nearest tenth.

Answers: 1

continue

You know the right answer?

The following steps are used to rewrite the polynomial expression (x + 4y + 2)(x - 7y).
step 1...