Question

use a table to find (x + 10)(x - 5)

Explanation:

Step1: Create 2x2 multiplication table

	$x$	$-5$
$10$	$10 \cdot x$	$10 \cdot (-5)$

Step2: Calculate each table entry

	$x$	$-5$
$10$	$10x$	$-50$

Step3: Sum all table entries

$x^2 + (-5x) + 10x + (-50)$

Step4: Combine like terms

$x^2 + (-5x + 10x) - 50 = x^2 + 5x - 50$

Answer:

$x^2 + 5x - 50$