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3 years ago

F(x) = 3(x + 5)2 - 10

Mathematics

2 answers:

Phantasy [73]3 years ago

7 0

6x-20 is your answer

Aliun [14]3 years ago

4 0

Answer: f(x)=3x2+30x+65

Step-by-step explanation:

F(x)=3(x+5)2-10

Using bodmas

B= bracket

O=of

D= division

M= multiplication

A= Addition

S= subtraction

So we go with the bracket

(X+5)2

=(x+5)(x+5)

Open the bracket

=x2+5x+5x+25

=x2+10x+15

Substitute for (x+5)2

F(x)=3(x2+10x+25)-10

Open the bracket

F(x)= 3x2+30x+75-10

F(x)= 3x2+30x+65

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Se the FOIL method to evaluate the expression: (5+2)(4-5)

DaniilM [7]

The FOIL method is a method of expanding two given brackets by following the required steps. Thus using the FOIL method, the required answer is: -7

Expansion of brackets may be done using different methods, but these methods would give the same answer. Some methods that can be used are the binomial expansion method, FOIL method, etc.

The FOIL method is a shortened form of the steps required for the process. These required steps are First, Outside, Inside, and last.

Thus to expand the given brackets in the question, we have;

(5+2)(4-5) = 5(4 - 5) + 2(4 - 5)

= 20 - 25 + 8 - 10

= 28 - 35

(5+2)(4-5) = -7

Thus using the FOIL method, the answer to the question is -7.

Quick check: (5+2)(4-5) = (7)(-1)

= -7

For more clarifications on expansion of brackets using the FOIL method, visit: brainly.com/question/1592629

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2 years ago

Solve 2 log x = log 36 Answer x = 72 x = 6 x = ±6 x = 18

astra-53 [7]

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Veronika [31]

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