Math, asked by nishichoudhary1009, 3 months ago

Simplify these expressions and find their values, if x = 3, a = – 1, b = – 2.

b) 2b – 8x + 4x²+ 4a

Answers

Answered by deepusingh12345687
10

Answer:

4 is answer

Step-by-step explanation:

X=3, a = -1, b = -2 (given)

expression

2b-8x+4x^2+4a

2(-2) - 8(3) + 4(3)^2+4(-1)

-4 - 24 + 36 - 4

-32 + 36

4 is Answer.

I hope this will help you

please mark brainy

Answered by Anonymous
0

Given - Expression

Find - Value of expression

Solution - The expression with respective values of variables is as follows -

Value = 2( - 2) - 8(3) + 4( {3}^{2} ) + 4( - 1)

Taking square of numbers as per the mentioned expression.

Value = 2( - 2) - 8(3) + 4( 9) + 4( - 1)

Performing multiplication of values and their respective brackets.

Value =  - 4 - 24 + 36 +  - 4

Performing addition and subtraction to find the value.

Value =  - 32 + 36

Value = 4

Thus, the value of expression is 4.

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