Answer:

B. 10y² – 38yz + 24z²

Step-by-step explanation:

The answer is letter B.

Solve (2y - 6z)*(5y - 4z) by just simply doing the FOIL method:

(2y - 6z)*(5y - 4z) : First ; 5y*2y = 10y²

(2y - 6z)*(5y - 4z) : Outer ; 5y*(-6z) = -30yz

(2y - 6z)*(5y - 4z) : Inner ; (-4z)*2y = -8yz

(2y - 6z)*(5y - 4z) : Last ; (-4z)*(-6z) = 24z²

Combine: 10y² - 30yz - 8yz + 24z²

Combine like terms: 10y² (- 30yz - 8yz) + 24z²

= 10y² - 38yz + 24z²

Answer:

B. 10y^2 - 38yz + 24z^2

Do the FOIL method:

F- First

O- Outer

I- Inner

L- Last

Step-by-step explanation:

Does this help?^-^

Hope it helps ;)