297 because 289 rounds to 290 plus 7 is 297
Answer:
2
Step-by-step explanation:
We are asked to perform the subtraction
x² + xy - 3y² - (5x² - xy + y²) ← distribute the parenthesis by - 1
= x² + xy - 3y² - 5x² + xy - y² ← collect like terms
= (x² - 5x²) + (xy + xy) + (- 3y² - y² )
= - 4x² + 2xy - 4y²
<em><u>The equivalent expressions are:</u></em>

<em><u>Solution:</u></em>
<em><u>Given expression is:</u></em>

We have to find the equivalent expressions
By distributive property,
a(b + c) = ab + ac
Therefore,

Thus equivalent expressions are found