143k views
0 votes
-

13. What should be added to 1,25 a b-0.7 ab +5.75 ab' to get 5.01ab
14. Simplify the expressions and evaluate their values as directed.
(a) 3y(2y - 7) - 3(y - 4) - 63 for y = -2
(b) -P-\m- n?)-p?(? - m²) +n+lp? - F )+ m² (nº -p?) for 1 = 1, m= -2,n=-1, p = 2
15. How much smaller is 2x3 - 2x + 5 than 7 + 5x + 3x ?
16. How much larger is 8x? - 9y2 than 3x – 2y??
Ansurer
actions​

User Vrakfall
by
8.1k points

1 Answer

2 votes

Answer:

16 The value by which (8x^2 - 9y^2)(8x

2

−9y

2

) is larger than (3x^2 - 2y^2)(3x

2

−2y

2

) is as follows:-

\begin{gathered}(8x^2 - 9y^2) - (3x^2 - 2y^2)\\= 8x^2 - 9y^2 - 3x^2 + 2y^2\\= 5x^2 -7y^2\end{gathered}

(8x

2

−9y

2

)−(3x

2

−2y

2

)

=8x

2

−9y

2

−3x

2

+2y

2

=5x

2

−7y

2

User Tryx
by
9.1k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories