+0  
 
0
800
1
avatar

2(-3)^2+5(-3^2-(-5))

Steps please

 Jul 29, 2015

Best Answer 

 #1
avatar+118587 
+5

2(-3)^2+5(-3^2-(-5))

 

$$\\2(-3)^2+5(-3^2-(-5))\\
=2*(-3)^2+5*(-3^2--5)\\
=2*(-3)^2+5*(-3^2+5)\\
=2*(-3)^2+5*(-\textcolor[rgb]{1,0,0}{1*}3^2+5)\\
=2*(-3)^2+5*(-\textcolor[rgb]{1,0,0}{1*}9+5)\\
=2*(-3)^2+5*(-9+5)\\
=2*(-3)^2+5*(-4)\\
=2*(-3*-3)+5*(-4)\\
=2*(9)+5*(-4)\\
=18+-20\\
=-2


\textcolor[rgb]{1,0,0}{ }$$

 

check

$${\mathtt{2}}{\mathtt{\,\times\,}}{\left(-{\mathtt{3}}\right)}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{5}}{\mathtt{\,\times\,}}\left({\mathtt{\,-\,}}{{\mathtt{3}}}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}\left({\mathtt{5}}\right)\right) = -{\mathtt{2}}$$

 Jul 29, 2015
 #1
avatar+118587 
+5
Best Answer

2(-3)^2+5(-3^2-(-5))

 

$$\\2(-3)^2+5(-3^2-(-5))\\
=2*(-3)^2+5*(-3^2--5)\\
=2*(-3)^2+5*(-3^2+5)\\
=2*(-3)^2+5*(-\textcolor[rgb]{1,0,0}{1*}3^2+5)\\
=2*(-3)^2+5*(-\textcolor[rgb]{1,0,0}{1*}9+5)\\
=2*(-3)^2+5*(-9+5)\\
=2*(-3)^2+5*(-4)\\
=2*(-3*-3)+5*(-4)\\
=2*(9)+5*(-4)\\
=18+-20\\
=-2


\textcolor[rgb]{1,0,0}{ }$$

 

check

$${\mathtt{2}}{\mathtt{\,\times\,}}{\left(-{\mathtt{3}}\right)}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{5}}{\mathtt{\,\times\,}}\left({\mathtt{\,-\,}}{{\mathtt{3}}}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}\left({\mathtt{5}}\right)\right) = -{\mathtt{2}}$$

Melody Jul 29, 2015

2 Online Users

avatar
avatar