How do you translate word phrases to algebraic expressions: a number squared plus two times the number less 7 is equal to zero?
Let's break this down.
a number: this means "any number", so we can substitute that with a variable,
squared: this means squaring the number, or multiplying it by itself (written as
two times the number: we've already established the number is
the number less 7: this looks like subtraction (a number less seven would be
For the parts I left out, I thought they would be easy to comprehend. If you did not understand them, you will find out when I go through setting this up:
plus two times the number less 7
is equal to zero
I believe this is what you meant.