b) (x - 3) ^ 2 = 81 d) (2 - x) ^ 2 - 16 = 0 - Dicamon

Question

b) (x - 3) ^ 2 = 81 d) (2 - x) ^ 2 - 16 = 0

Answer

d)(2-x)^ 2 -16=0; (2 - x) ^ 2 - 4 ^ 2 = 0; (2 - x - 4)(2 - x + 4) = 0; (- x - 2)(- x + 6) = 0; x = - 1; x = 6; [ matrix -x-2=0  -x+6=0 matrix

Answer

(2 - x) ^ 2 - 16 = 0; (2 - x) ^ 2 - 4 ^ 2 = 0; (2 - x - 4)(2 - x + 4) = 0; (- x - 2)(- x + 6) = 0; [ matrix -x-2=0  -x+6=0 matrix [ matrix -x=2(=)  -x=-6 matrix ]x=-2  x=6 matrix ]

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