pitaanamaria23 pitaanamaria23

22-05-2016
Mathematics

contestada

(5a-2)(5a+2)-3(1-a)-3a=

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PrinceBrainly PrinceBrainly

22-05-2016

Hi There! :)

(5a-2)(5a+2)-3(1-a)-3a=25a2−7

Therefore answer is 25a2−7

Answer Link

penfila11Pen penfila11Pen

22-05-2016

So first we need to know the order of operations
P - Parenthesis
E - Exponents
M - Multiplication
D - Division
A - Addition
S - Subtraction

Then the special cases:
(I have attached a picture below)

Lets get into action!
(5a - 2)(5a + 2) - 3( 1 - a ) - 3a
25a² - 4 - 3 + 3a - 3a
25a² - 7
25a² - 7 is the answer

Ver imagen penfila11Pen

Answer Link

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