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2018-11-20 · 在我们满怀期待中悄悄地来了 下面是作文网暑假英语作文栏目为您准备了四篇《我的暑假英语作文50字带翻译 感恩老师英语作文高中 生 2018-11-06 高中生感恩.
A student says that if 5x2 = 20, then x must be equal to 2. Do you agree or disagree with the student? Justify your answer. I disagree. If each side of the equation is divided by 5, the result is x2 = 4. By the square root property of equality, x = -2 or x = 2. So x could be -2 instead of 2.