(1) (x-3)² = 16 (求x)(2)-27(x+30)=64
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(1) (x-3)² = 16 (求x)(2)-27(x+30)=64
(1) (x-3)² = 16 (求x)
(2)-27(x+30)=64
(1) (x-3)² = 16 (求x)(2)-27(x+30)=64
(1)(x-3)² = 16
x-3=4或x-3=-4
x=7或x=-1
(2)-27(x+30)=64
x+30=-64/27
x=-30-64/27
x=-874/27