Question

Diagnostic Pre Test

TEST
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The square of a number is 12 less than 7 times the number. What is the number?
• 4 or-3
0 -4 or 3
0 -3 or 4
3 or 4

Answer 1

We can make this:

x^2=7x-12

This becomes:

x^2-7x+12=0

Factored form:

(x-4)(x-3)=0

The numbers are either 4 or 3, so D is correct

Hope this helped!