Question

if 3x - 4y = 10 and xy = -1, find the value of 9x2 + 16y2​

Answer 1

Answer:

9x²+16y²=76

Step-by-step explanation:

If 3x - 4y = 10 and xy = -1,

• then,(3x - 4y)² = 10²
• 9x²+16y²-24xy=100
• 9x²+16y²-24(-1)=100
• 9x²+16y²=100-24
• 9x²+16y²=76

Answer 2

Answer:

76

Step-by-step explanation:

=(3x-4y)^2=10

=9x^2+16y2-24xy=100

=9x^2+16y^2+24=100

9x^2+16y^2=76

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