Question

1.add 4x² -15x + 2 and -6x² + 2x -7
2.subtract 5a²b² + 3ab -7 from 8a²b² + 8ab - 9
3. write the following algebraic expression in standard form
45x + 25x²y³ - 42xy² - 2x⁴y²​

Answer 1

Answer:

the answer of the first question is

$- 2 {x}^{2} - 13x - 5$

the answer of the second question is

$3a {}^{2} {b}^{2} + 5ab - 2$

the standard form of this algebraic expression is

$- 2 {x}^{4} {y}^{2} + 25{x}^{2}y^{3} - 42x{y}^{2} + 45x$