An expression is a mat scentence but not a complet on.Example:2x3. Or a x 5. I hope I said it clearly for you.
lol
Step-by-step explanation:
Answer:
Step-by-step explanation:
½X+7
Answer:
r²+6r+9
Step-by-step explanation:
for the expansion of (r+3)², we use the formula as,
(a+b)²=a²+2ab+b²
here, we have
a=r
b=3
plug in all the values
(r+3)²=r²+2(r)(3)+3²
solving the equation
(r+3)²=r²+6r+9
(3x^2+1)-(1-x)
3x^2+1-1+x
x=2
3 (2)^2+1-1+2
3×4+1-1+2
12+1-1+2
13-1+2
12+2
14
