rw [C_mul']
R : Type u_1
ι : Type u_2
inst✝¹ : CommSemiring R
inst✝ : NoZeroSMulDivisors R R
p : MvPolynomial ι R
r : R
hr : ¬r = 0
⊢ (C r * p).support = p.support
R : Type u_1
ι : Type u_2
inst✝¹ : CommSemiring R
inst✝ : NoZeroSMulDivisors R R
p : MvPolynomial ι R
r : R
hr : ¬r = 0
⊢ (r • p).support = p.support