2y*2y^6u^7*4u^2
2y*2y^6u^7*4u^2 can be simplified by multiplying the coefficients and adding the exponents with the same base:
2 * 2 * 4 = 16
y * y^6 = y^(1 + 6) = y^7
u^7 * u^2 = u^(7 + 2) = u^9
Therefore, the simplified expression is:
16y^7u^9