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已知a b-5的绝对值 (ab 6)的平方=0求代数式(5xy 4x 7y) (6x-3xy...
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绝对值的性质 非负性： | x | ≥ 0 绝对值总是非负的，这意味着它 一直 产生零或正数。 | x | = √ x 2：方数使数字变正（如果数字为零，则变为零），通过对平方数字取平方根，我们得到的是一个正数的解（如果数字为零，则为零）。 这只在 x 为实数时有效。
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• a+b — \ (a+b\) • a-b — \ (a-b\) • a*b — \ (a\cdot b\) • a/b — \ (\dfrac {a} {b}\) • a^b, a**b — \ (a^b\) • sqrt7 (x) — \ (\sqrt [7] {x}\) • sqrt (n,x) — \ (\sqrt [n] {x}\) • lg (x) — \ (\log_ {10}\left (x\right)\) • log3 (x) — \ (\log_3\left (x\right)\) • log (a,x) — \ (\log_a\left (x\right)\)
Solving absolute value equations is somewhat tricky; it requires understanding of the absolute value property....
拆解开,a+b=5,ab=6,所以a的平方加b的平方就等于13 错了,等一下
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