08-05-2014
Mathematics

Answered

If P = a^2 + a - 1 and R = –a - 1, which expression represents P + R
a) a^2 + 2
b) a^2 - 2
c) a^2 + 2a
d) a^2 + 2a - 2

Answer :

Аноним Аноним

08-05-2014

[tex]P=a^2+a-1;\ R=-a-1\\\\P+R=(a^2+a-1)+(-a-1)=a^2+a-1-a-1=a^2-2\\\\Answer:b)[/tex]

Answer Link

Other Questions

The coordinates below represent two linear equations How many solutions does this system of equations have Line 1 x y 3 5 0 4 Line 2 x y 0 4 6 2 A 0 B exactly 1

What are the main structures in a bulb and their function Flowers for sexual reproduction Flowers for sexual reproduction B Enlarged roots for nutrient absorpti

what is the land like in the south and southwest parts of asia

You use an xy plane to represent your position Starting at 150 m 50 m you walk 20 meters west and 30 meters north What are your new coordinates

please answer this equation what is the answer to 14k110

Do sea stars molt

What is the modern name of Aegyptus

an engineer is designing a parabolic arch the arch must be 15 m high and 6 m wide at the height of 8 m Determine a quadratic function that satisfies these condi

How do I factorise 2t2 5t 2

Which describes how Herodotus contributed to Athenian culture A as a physician B as a philosopher C as a mathematician D as a historian