Question

Write an expression to represent the sum of three times the square of a number and -7.

Answer 1

Answer:

3n²-7

Step-by-step explanation:

• Let a number be 'n'

• 3 times a number will be 3n

• the square of a number will be n² thus 3n²

• -7 comes at the end of the expression

• your constant is the value/number without a variable (in this case 'n' is your variable)

• -7 is your constant.