Question

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Answer 1

Explicación paso a paso:

(2Y - 12)^ 2= 4y^2 - 2(2y)(12) + 12^2

4y^2- 48y + 144

luego igualamos

4y^2- 48y + 144= ax^2 - bx + c

ahora igualamos convenientemente

144= c

a= 4

b = 48

nos piden

(a - b + c)

4 - 48 + 144= 100

solución la clave es la A

fácil y sencillo como todas