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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 8: Mong mọi người giúp ạ Câu 1: Tính a,(3b+$\frac{5a}{6}$)$^{2}$ b,(5x-y)² c,(2a+b+5)(2a-b+5) d,($\frac{a}{3}$+4y)$^{2}$ e,($\frac{1}{x}

Toán Lớp 8: Mong mọi người giúp ạ
Câu 1: Tính
a,(3b+$\frac{5a}{6}$)$^{2}$
b,(5x-y)²
c,(2a+b+5)(2a-b+5)
d,($\frac{a}{3}$+4y)$^{2}$
e,($\frac{1}{x}$-$\frac{3}{y}$)$^{2}$
f,($\frac{x}{2}$-$\frac{yz}{6}$)($\frac{x}{2}$ $\frac{yz}{6}$)

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222-9+11+12:2*14+14 = ? ( )