Question

which expression has the value -19 ? (a) 9+1-51+1-331 (b) 9-1-51-1-331 (c) 9+1-51-1-331 (d) -9+1-51-1-331​

Answer 1

Some Standard Algebraic Identities list are given below: Identity I: (a + b)2 = a2 + 2ab + b2. Identity II: (a – b)2 = a2 – 2ab + b2. Identity III: a2 – b2= (a + b)(a – b) Identity IV: (x + a)(x + b) = x2 + (a + b) x + ab.