- 2x - 2y = -2 -10x + 10y = 10?

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Discrete Help ASAP. Please write out symbolic notation.? Find all of the actual roots of the polynomial: x^3 - 2x^2 + 5x + 26 = 0? Verify that M(u,v)=A +u(B-A) +v(C -A) ( A,B,C vectors) is a parametric representation of surface of the triangle A(1,0,0) B(0,-1,2) C(0,2,1)? A constant current of 1A flow in circuit over period of 5s.total charge flowing through circuit over this duration will be.
Expert plz and? 7^(x+1) + 7^x + 7^(x-1) = 399, what is x?