Question

5. Add 14x + 10y - 12ry - 13, 18 – 7x - 10y + 8xy.
6. 23 x a² x 5a simlify.
7. Express in exponential form
769​

Answer 1

Answer:

$5. \: \: 14x + 10y - 12ry - 13 + 18 - 7x - 10y + 8xy \\ = 14x - 7x + 10y - 10y - 13 + 18 - 12ry + 8xy \\ = 7x - 0 + 5 - 12ry + 8xy \\ = 7x + 5 - 12ry + 8xy \\ \\ 6. \: 23 \times a^{2} \times 5a \\ = 23 \times 5a^{3} \\ = 115a^{3}$

Answer 2

Answer:

5. 7x - 7xy - 5

6. 115a^3

7. 3^6

Step-by-step explanation:

5. 14x + 10y - 12xy - 13 + 18 - 7x -10y +8xy

= 7x - 4xy - 5

6. 23 × a^2 × 5a

= 115a^3

7. 729 = 3 × 243

= 3 × 3 × 81

= 3 × 3 × 3 × 27

= 3 × 3 × 3 × 3 × 9

= 3 × 3 × 3 × 3 × 3 × 3

= 3^6