Question

Simplify the expression: (10x2 -1 + 4x) + (3 + 5x2 - 4x)

Answer 1

Answer:

$\boxed{\sf 15x^2 + 2}$

Step-by-step explanation:

Simplify the expression:

$\sf \implies(10 {x}^{2} - 1 + 4x) + (3 + 5 {x}^{2} - 4x)$

Grouping like terms, 10x² + 5x² + 4 x - 4 x - 1 + 3 = (10 x² + 5x²) + (4 x - 4 x) + (-1 + 3):

$\sf \implies (10 x^2 + 5 x^2) + (4 x - 4 x) + (-1 + 3)$

10x² + 5x² = 15x²:

$\sf \implies 15 x^2 + (4 x - 4 x) + (-1 + 3)$

3 - 1 = 2:

$\sf \implies 15 x^2 + (4 x - 4 x) + 2$

4 x - 4 x = 0:

$\sf \implies 15 x^2 + 2$