Circumference 26651

A rectangle with sides of lengths a, b (cm) has a circumference of 100 cm. The dependence of its area P (in cm2) on the number a can be expressed by the quadratic function P = sa + ta2. Find the coefficients s, t.

Correct answer:

s =  50
t =  -1

Step-by-step explanation:

o=100 cm o=2(a+b) 50=a+b P=sa+ta2=ab sa+ta2=ab sa+ta2=a(50a) sa+ta2=50aa2  s=50

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