Решите уравнение x^2 + 7= (x+7)^2
x^2 + 7= (x+7)^2
x^2+7=x^2+14x+49
-14x-42=0
-14х=42
х=-3
x^2 + 7= (x+7)^2x^2+7=x^2+2*7x+7^2x^2+7=x^2+14x+49
-14x=49-7
-14x=42
x=-3
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Verified answer
x^2 + 7= (x+7)^2
x^2+7=x^2+14x+49
-14x-42=0
-14х=42
х=-3
x^2 + 7= (x+7)^2
x^2+7=x^2+2*7x+7^2
x^2+7=x^2+14x+49
-14x=49-7
-14x=42
x=-3