4 - z -2-4 -2 equalsA- 4 z -4B- 4 z -4C- 4 z -2D- 2 z -4

The correct option is B 4(z+4) We know that, multiplying two numbers separately by 4 nbsp;and then adding is same as multiplying the sum of two numbers by 4. ...

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Byju's Answer

Standard VII

Mathematics

Substitution

4 × z +2+4 ×2...

Question

$(4 \times (z + 2)) + (4 \times (2))$ equals

$4 (z + 4)$

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$4 (z - 4)$

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$4 (z + 2)$

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$2 (z + 4)$

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Solution

The correct option is A
$4 (z + 4)$

We know that, multiplying two numbers separately by 4 and then adding is same as multiplying the sum of two numbers by 4.

i.e., If $x$ and $y$ are any two numbers, then $4 x + 4 y = 4 (x + y)$

So, $- (4 \times (z + 2)) + (4 \times (2))$
$= 4 \times ((z + 2) + (2))$
$= 4 \times (z + 2 + 2)$
$= 4 \times (z + 4) = 4 (z + 4)$

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(4×(z+2))+(4×(2)) equals

The correct option is A 4(z+4) We know that, multiplying two numbers separately by 4 and then adding is same as multiplying the sum of two numbers by 4. i.e., If x and y are any two numbers, then 4x+4y=4(x+y) So, −(4×(z+2))+(4×(2)) =4×((z+2)+(2)) =4×(z+2+2) =4×(z+4)=4(z+4)

$(4 \times (z + 2)) + (4 \times (2))$ equals