हल करना 0,4^ 2 -1 2,8*0,4-2,8 | Equatix - Math Solver

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Example

3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$$\frac{0,4^{2}-1}{2,8\cdot0,4-2,8}$$