4) Answer = [tex]5x^8[/tex]
[tex]\left(3x^6\right)\left(5x^2\right)[/tex]
[tex]=3\cdot \:5x^{6+2}[/tex]
[tex]=3\cdot \:5x^8[/tex]
[tex]=15x^8[/tex]
5) Answer = [tex]30x^6[/tex]
[tex]5x^2\cdot \:6x^4[/tex]
[tex]=30x^2x^4[/tex]
[tex]=30x^{2+4}[/tex]
[tex]=30x^6[/tex]
6) Answer = [tex]-12a^5b^6[/tex]
[tex]\left(-4a^3b\right)\left(3a^2b^5\right)[/tex]
[tex]=-4a^3b\cdot \:3a^2b^5[/tex]
[tex]=-12a^3ba^2b^5[/tex]
[tex]=-12a^5bb^5[/tex]
[tex]=-12a^5b^6[/tex]
