Answer:
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Step-by-step explanation:
X^2 - 6x = 20
x^2 - 6x + 9 = 20 + 9
(x - 3)^2 = 29
x - 3 = (+-) sqrt 29
x = 3 (+-) sqrt 29
x = 3 (+-) 5.39
x = 3 + 5.39 = 8.39 <=
x = 3 - 5.39 = - 2.39 <=
L = 5 and w = 3
Perimeter = 2(l + w)
P = 2(5 + 3)
P = 2(8)
P = 16 cm
Area = l*w
Area = 5*3
Area = 15 cm^2