Question

(xxi) 2ab-a?-ba+c2
(xxii) 36x2-16a2-24ab-9b2
(xxiii) a?-1+2b-b
(xxiv) a-2a-b2+2b
(xxv) (a2-b-) (c2-d)-4abcd (xxvi) az-b2-4ac+4bc
(xxvii) (a²-b2-c+d2)2-4(ad-bc)2(xxviii) 3x2-y2+z2-2xy - 4xz​

Answer 1

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