I need help immediately

We we multiply we add exponents of like bases.  Of course we multiply constants.

7z²5z⁴d³d⁸ =(7)(5)z²z⁴d³d⁸ = 35z²⁺⁴d³⁺⁸ = 35z⁶d¹¹

35z⁶d¹¹

Make up a problem?

(-2x²yz)(3xy²z)(4xyz²) = (-2)(3)(4) x²⁺¹⁺¹y¹⁺²⁺¹z¹⁺¹⁺² = -24x⁴y⁴z⁴

How do I know it's right?  I guess from doing a lot of them; these aren'tthat hard.

. + λrh() e 1 1 2 4 4 4 4 4 3 4 4 4 4 4 + th−1(− s(x)2 dx ω + λrh−1() e 2 1 2 4 4

step-by-step explanation: