Toán Lớp 9: giúp mik vs ạ
√a+ 15 – √a+15 + √a-45
A.9
B.12
C.14
D.10
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Toán Lớp 9: giúp mik vs ạ
√a+ 15 – √a+15 + √a-45
A.9
B.12
C.14
D.10
Comments ( 2 )
=\sqrt{a-45}
-> không có giá trị thỏa mãn ạ