4 years ago

Urgent please answer

Mathematics

2 answers:

MrRa [10]4 years ago

8 0

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{24}}}}}$

Step-by-step explanation:

$\sf{ - 12( - 2)}$

$\dashrightarrow{ \sf{( - 12) \times ( - 2)}}$

Multiplying or dividing a negative integer by a negative integer gives a positive integer

i.e ( - ) × ( - ) = ( + )

( - ) ÷ ( - ) = ( + )

$\dashrightarrow{ \boxed{ \sf{24}}}$

Hope I helped!

Best regards! :D

Ghella [55]4 years ago

3 0

Answer:

Step-by-step explanation:

-12 x -2 = 24

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Prove algebraically that (m + 2)2 – m 2 – 12 is always a multiple of 4

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Step-by-step explanation:

Step 1:

Write the expression

$(m+2)^{2} - m^{2} - 12$

Step 2: Expand $(m + 2)^{2}$

$(m+2)^{2} - m^{2} - 12\\(m+2)(m+2) - m^{2} - 12\\m^{2} + 2m + 2m + 4 - m^{2} - 12$

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