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3 years ago

Show that (3+4)2−(3−4)2−(4)(4)=32

Mathematics

1 answer:

tatuchka [14]3 years ago

8 0

Answer:

Explanation below

Step-by-step explanation:

(3+4)= 7

7+2 = 9

-(3-4) (Invisible one)

-3+4 add to the 9

10+2= 12

12-4=8

8×4 =32

Sorry if this seems a bit confusing, but its quite hard to show the process without paper.

Hope this helps! :)

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4x+11y=7 4x+3y=-1 what are the steps

andreev551 [17]

Answer:

x = -1, y = 1

Step-by-step explanation:

Given that:

$\begin{bmatrix}4x+11y=7\\ 4x+3y=-1\end{bmatrix}$

Isolate x for 4x + 11y = 7 which ⇒ $x=\frac{7-11y}{4}$

Substitute $x=\frac{7-11y}{4}$ into the equation: which is:

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Drop Down to:

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The sum of two numbers is 25. Their difference is 9. What are the two numbers?

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Using the value of x and plugging said value into #1 or #2, we can find y
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