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2 years ago

Please help me with my maths homework all answer

Mathematics

2 answers:

Andreyy892 years ago

7 0

Answer:

16: 24ab, a negative times a negative always makes a positive by the way

17: 6x^4

18: 15, 15-8=7, then 7x3=21

19: -2x+8

20: 8a

21: y x y x y

22: 2a+3b

23: 6a^4

24: x times x times x times x

25: 49y^2

BabaBlast [244]2 years ago

3 0

Answer:

bro use air math it will give u the answers trust me

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3 years ago

Limited time . 10 points

AfilCa [17]

Answer:

Therefore the value of x is

$x=1\pm\sqrt{19}i$

Step-by-step explanation:

Given:

$x^{2}+20=2x$ which is

$x^{2}-2x+20=0$

To Find:

x = ? using Quadratic Formula

Solution:

For a Quadratic Equation ax² + bx + c = 0 , Formula Method is given as

$x=\dfrac{-b\pm\sqrt{b^{2}-4ac}}{2a}$

On Comparing with above we get

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Substituting a , b , c in Formula method we get

$x=\dfrac{-(-2)\pm\sqrt{(-2)^{2}-4(1)(20)}}{2\times 1}\\\\x=\dfrac{2\pm\sqrt{-76}}{2}\\\\x=\dfrac{2\pm2\sqrt{19}i}{2}\\Dividing\ by\ 2\ we\ get\\\\x=1 \pm\sqrt{19}i$

Therefore the value of x is

$x=1\pm\sqrt{19}i$

8 0

3 years ago