<span>x^2+8x-20=0
Factor the left side of the equation
</span><span><span>(x−2)</span><span>(x+10)</span></span>=<span>0
</span>
Set the factors to both equal the number 0
<span><span>x−2</span>=<span><span><span>0
and/or
</span>x</span>+10</span></span>=<span>0
</span>x = 2 and/or x = -10
Life could be different after an ice age because the ice would melt and form large boundaries of water. The land would not be the same at all.
First turn 18% to a decimal, which is .18, then multiply it by 450.
450 x .18 = 81
Birth rates: moderate
Death rates: low
population growth: high