Question 1207566
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a number q: {{{q}}}<br>
the square of a number q: {{{q^2}}}<br>
twice the square of a number q: {{{2q^2}}}<br>
4 less than twice the square of a number q: {{{2q^2-4}}}<br>
Note in the last step "4 less than..." means the 4 is being subtracted from the rest of the expression.<br>