Review Chap2

23n + 4, what it is....

• Equation

• Expression

• Expanding

• Formulae

23n + 4= 13 what it is....

• Equation

• Expression

• Expanding

• Formulae

r and s when r= 5 and s= 6

So, what is the exact answer from r+3s...

• 23

• 22

• 24

• 25

x and y when x=-3 and y=2

So, what is the exact answer from 2x - 3y...

• 12

• 0

• -12

• 25

Which one the best way to write simplified expressions...

i. a

ii. 1a

iii. a+a

iv. 2a

• Only i

• I and iv

• All are correct

• All are wrong

Simplify this expressions.

2a - 3a x 4a

• 10a

• 14a

• -12a² + 2a

• 2a+12a

What Is the exact answer of this expression?

a x b + c=

• ab + c

• abc

• 2ab + c

• 2abc

What is the exact answer of this expression?

r+r x r =

• 2r

• 2r²

• 2r + r

• 2r x r

v>17

The values of V...

• 18,19 until 20

• 17, 18, 19,...

• 118, 19, 16, 20,...

• 18, 19, 20, ...∞

(⅜ n) 8 = 15

n...

• 6

• 2

• 5

• 1/2