4 years ago

What is the answer for x+4=7

Mathematics

2 answers:

gtnhenbr [62]4 years ago

8 0

Your answer is 3 7-4=3

Musya8 [376]4 years ago

7 0

Answer:

The answer is 3

Step-by-step explanation:

7 - 4 = 3

So, 3+4=7

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Evgen [1.6K]

Answr should be 12 only

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4 years ago

Show all work to multiply (3+√-16)(6√-64)

tatuchka [14]

Answer:

$\large\boxed{(3+\sqrt{-16})(6\sqrt{-64})=-192+144i}$

Step-by-step explanation:

$\sqrt{-1}=i\to i^2=-1\\\\(3+\sqrt{-16})(6\sqrt{-64})=(3+\sqrt{(16)(-1)})(6\sqrt{(64)(-1)})\\\\=(3+\sqrt{16}\cdot\sqrt{-1})(6\cdot\sqrt{64}\cdot\sqrt{-1})=(3+4i)\bigg((6)(8i)\bigg)\\\\=(3+4i)(48i)\qquad\text{use the distributive property}\ (b+c)a=ba+ca\\\\=(3)(48i)+(4i)(48i)=144+192i^2\\\\=144i+192(-1)=-192+144i$