Question

Find the value of (3x + 2y-3z) (9x² + 4y² + 9z² - 6xy + 6yz + 9xz) if x = 2, y = 1, z = -1​

Answer 1

Answer:

143.

Step-by-step explanation:

= [(3X2) + (2×1) - (3×-1)] × [(9×2) + (4×1) + (9×1) - (6×2×1) + (6×1×-1) + (9×2×-1)]

= (6+2+3) × (36+4+9-12-6-18)

= 11 × (49-36)

= 11 × 13

= 143.

Answer 2

Answer:

143 is the answer of this question