Expand the expression:
a) (u + v)^3
b) (u + v)^4

(a)

(b)                        

Step-by-step explanation:

We have to expand the expression

(a) there are different methods for expanding the expression here u used algebraic identity for expansion

We know the algebraic identity

(b)

We know the algebraic identity

can be written as

answer: 0+0=0

step-by-step explanation:

that is the only answer that can make 0

answer: solve 5\cdot 2^x=2405⋅2  

x

=2405, dot, 2, start superscript, x, end superscript, equals, 240.

solution

to solve for xxx, we must first isolate the exponential part. to do this, divide both sides by 555 as shown below. we do not multiply the 555 and the 222 as this goes against the order of operations!

\begin{aligned} 5\cdot 2^x& =240 2^x& =48 \\ \end{aligned}  

5⋅2  

x

2  

x

​    

=240

=48

​

step-by-step explanation: