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first of them is equal to (ab c)2 −2(ab bcca) So the instances of equality are described by the system of two equations ab c = 1, abbc ca = 0 plus the constraint a,b,c 6= 1 Elimination of c leads to a2 abb2 = ab, which we regard as a quadratic equation in b, b2 (a− 1)ba(a −1) = 0, with discriminant59 = 625 Given, ab bc ca = 59 a 2 b 2 c 2 118 = 625 a 2 b 2 c 2 118 – 118 = 625 – 118 subtracting 118 from both the sides Therefore, a 2 b 2 c 2 = 507 Thus, the formula of square of a trinomial will help us to expand 7th Grade Math Problems 8th Grade Math Practice From Square of a Trinomial toA 2 b 2 c 2 2 × Simplify Ab Ca Ab 3b Ac Ab Brainly In Ab bc calc