All categories

2 years ago

Factor completely. f(x) = −16x2 + 22x + 3

Mathematics

1 answer:

grigory [225]2 years ago

8 0

Answer:

8x(2x+3)-2(x+3)

step by-step explanation:

16x^2+22x+3

16*3=48

2 numbers which have a product of 48 and a sum of 22

=24 and -2

Rewrite the centre term as these two numbers, so

16x^2+24x-2x+3

Factorise each pair of terms.

8x(2x+3)-2(x+3)

You might be interested in

ANSWER THESE ILL GIVE U BRAINLIEST

Alexxx [7]

5. is C

6. is D

7. is C

5 0

2 years ago

Read 2 more answers

please help!!! ive been trying this question for the pass 20 minutes and cant seem to understand it!!

Lesechka [4]

Answer:

Step-by-step explanation:

Beacuse ‍♀️

5 0

2 years ago

Read 2 more answers

Solve the equation x+3/x-4 = x-5/x+4

Serga [27]

Answer:

$\large\boxed{x=\dfrac{1}{2}}$

Step-by-step explanation:

$\dfrac{x+3}{x-4}=\dfrac{x-5}{x+4}\\\\\text{Domain:}\ x-4\neq0\ \wedge\ x+4\neq0\\\\x\neq4\ \wedge\ x\neq-4\\\\D:x\in\mathbb{R}-\{-4,\ 4\}$

$\dfrac{x+3}{x-4}=\dfrac{x-5}{x+4}\qquad\text{cross multiply}\\\\(x+3)(x+4)=(x-4)(x-5)\qquad\text{use FOIL}\ (a+b)(c+d)=ac+ad+bc+bd\\\\(x)(x)+(x)(4)+(3)(x)+(3)(4)=(x)(x)+(x)(-5)+(-4)(x)+(-4)(-5)\\\\x^2+4x+3x+12=x^2-5x-4x+20\qquad\text{combine like terms}\\\\x^2+(4x+3x)+12=x^2+(-5x-4x)+20\\\\x^2+7x+12=x^2-9x+20\qquad\text{subtract}\ x^2\ \text{from both sides}\\\\7x+12=-9x+20\qquad\text{subtract 12 from both sides}\\\\7x=-9x+8\qquad\text{add}\ 9x\ \text{to both sides}\\\\16x=8\qquad\text{divide both sides by 16}\\\\x=\dfrac{8}{16}\\\\x=\dfrac{8:8}{16:8}\\\\x=\dfrac{1}{2}\in D$

7 0

2 years ago

Need Answers ASAP

barxatty [35]

Angle m is supplementary to the angle that is 125° degrees.

Supplementary angles mean they add up to 180°, which is a straight line.

180-125= 55.

So, angle m is 55°

I hope that helps!

4 0

3 years ago

Find the slope between (-4,9)and(-2,8)

Taya2010 [7]

Answer:

-1/2

Step-by-step explanation:

Tell me if you want a step by step.

Hope this helps. :)

7 0

2 years ago

Read 2 more answers