Question 270847
1) S = -10(2)^2+21(2)+7.
2) S = -10(4)^2+21(4)+7.
i think u have these parenthesies out of order if x=2 and x=4 for 2nd problem they should look like this:
{{{S=-10(2^2)+21(2)+7}}} now simple order of opperations:() then * then +
{{{S=-10(4)+21(2)+7}}}
{{{S=-40+42+7}}}
{{{S=9}}}
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{{{S=-10(4^2)+21(4)+7}}}
{{{S=-10(16)+21(4)+7}}}
{{{S=-160+84+7}}}
{{{S=-69}}}