Hello :
the discriminat of each quadratic equation : ax²+bx+c=0 ....(a <span>≠ 0) is :
</span><span>Δ = b² -4ac
1 ) </span>Δ > 0 the equation has two reals solutions : x = (-b±√Δ)/2a
2 ) Δ = 0 : one solution : x = -b/2a
3 ) Δ <span>< 0 : no reals solutions</span>
Let’s find the area of Ells room.
78•96
7,488
Let’s find Sarah’s room.
66•108
7,128
Now add their area together.
14,616 inches squared.
X= 7/93 or roughly 0.07526...
