Question

3x2 -5xy+4y2 -1, 7y2 -9xy+5, 7xy-4x2+y2 -13​

Answer 1

fi(x) = 3x² - 5xy +uy² -1 = 3x² -5xy + 4y² = 1

f₂(x) = 7y²-9xy +5 = ox² - 9xy + 7y² +5

F2(x) =7xy-4x² + y²-13 = -4x² +7xy + y²-13.

土____________________________

f1(x) + f2(x) + f3(x) = x ^ 2 (3 + o - y) + xy (- 5 - 9 + 7) + y ^ 2 (4 + 7 + 4) +(-1+5-413)

= -x² = 7 xy +124² -9 Ans Regoldy

Answer 2

Answer:

9 is the correct answer...

Step-by-step explanation:

pls mark the answer in brainlist...