Question

Solve: (5x - 3y + 2z)²

Answer 1

Answer:

25$x^{2}$ - 30xy + 20xz + 9$y^{2}$  - 12yz + 4$z^{2}$

Step-by-step explanation:

We multiply it out.

(5x - 3y + 2z) * (5x - 3y + 2z)

5x*5x + 5x*-3y + 5x*2z - 3y*5x - 3y*-3y -3y*2z + 2z*5x +2z * -3y +2z *2z

25$x^{2}$ - 15xy + 10xz - 15xy + 9$y^{2}$ - 6yz + 10xz - 6yz + 4$z^{2}$

Add like terms

25$x^{2}$ - 15xy - 15xy + 10xz + 10xz + 9$y^{2}$ - 6yz - 6yz + 4$z^{2}$

25$x^{2}$ - 30xy + 20xz + 9$y^{2}$  - 12yz + 4$z^{2}$