charlotte95 charlotte95

16-01-2020
Mathematics

contestada

• Expand and simplify the following
expressions:
• (a + b + 1)(a - b)

Respuesta :

dontaskme12 dontaskme12

16-01-2020

Answer:

a² + b² + a - b

Step-by-step explanation:

brackets mean multiplying everything by each individual

a² + ba + a - ba - b² - b

simplify buy collecting like terms:

highest values first and +ba mad -ba cancel out

a² + b² + a - b

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