20x2 = 40 = 5x + ___ + x^2
x^2 + 5x + c = 40
x^2 +5x = 40-c
x^2 + 5x + (5/2)^2 = 40-c + (5/2)^2
(x +5/2)^2 = 40+25/4 -c= the missing term
x+5/2 = sqr(185/4 -c)
x = -5/2 +/-sqr(185/4 -c)
c = 40-x^2 -5x
Judy W.
asked • 05/08/23Solve the equation
20 x 2 = 5 x blank x 2
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