The square of 9 less than a number is 3 less than the number. what is the number?

a) –12 or 7
b) –12 or –7
c) –7 or 12
d) 7 or 12

What expression is equivalent to log3(x+4)

If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b

Type the correct answer in each box. spell all the words correctly, and use numerals instead of words for numbers. if necessary, use / for the fraction bar(s).