What is the first step in simplifying the expression?

A.Square 4
B.Subtract 7 from 9
C.Add 3 and 4
D.Multiply 7 by 3

Question

28-01-2016
Mathematics

contestada

What is the first step in simplifying the expression?

A.Square 4
B.Subtract 7 from 9
C.Add 3 and 4
D.Multiply 7 by 3

Respuesta :

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Аноним Аноним · Answer 1 · 2016-01-28T17:12:46+01:00

(9 - 7 X 3 + 4 )²
Always follow the rule
BIDMAS

Brackets
Indices
Division
Multiplication
Addition
Subtraction

First look at the Brackets
There are no indices in the brackets
There is no division in the brackets
There is a Multiplication in the brackets    7 x 3

For the answer
(9 - 7 x 3 + 4)²
Brackets
Multiplication   7 x 3 = 21
(9 - 21 + 4)²
Addition   -21 + 4 = -17
(9 - 17)²
Subtraction    9 - 17 = -8
-8²

Now start again once the brackets are gone
-8²
Indices
-8 x -8 = 64

What is the first step in simplifying the expression? A.Square 4 B.Subtract 7 from 9 C.Add 3 and 4 D.Multiply 7 by 3

Respuesta :

Otras preguntas

What is the first step in simplifying the expression?

A.Square 4
B.Subtract 7 from 9
C.Add 3 and 4
D.Multiply 7 by 3