Hey there! :)
(2x - 6)(5x + 7)
Simplify by doing the "rainbow" method.
(2x · 5x) + (2x · 7) + (-6 · 5x) + (-6 · 7)
Simplify.10x² + 14x + (-30x) + (-42)
Get rid of parenthesis.10x² + 14x - 30x - 42Add like terms.10x² + (14x - 30x) - 42
Simplify.
10x² + (-16x) - 42
Get rid of parenthesis.
10x² - 16x - 42
~hope I helped~