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Expand and simplify each of the following expressions.

(a) −2 ( – 5 + 7)
(b) ( + 3ℎ )( 5ℎ – 4)
(c) (2 + 3)( – 5) – ( 3 + 7)( – 7)
Please help me in these questions.

Respuesta :

joyce202
a)-2(-5+7)
=10-14
=-4
b)(+3h)(5h-4)
=15h^2-12h
c)(2+3)(-5)-(3+7)(-7)
=5(-5)-10(-7)
=-25+70
=45

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