How do you simplify the product # (a - 11)(a + 5)# and write it in standard form?

1 Answer
Feb 13, 2016

Answer:

#a^2-6a-55#

Explanation:

#(a-11)(a+5)#

These are two binomials so,use the FOIL method of multiplying binomials.

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#ul Firstrarra*a=a^2#

#ul Outerrarra*5=5a#

#ul In##n##errarr-11*a=-11a#

#ul La##st##rarr-11*5=-55#

Now combine them together:

#rarra^2+5a-11a-55#

#rArr=a^2-6a-55#