21hali122 21hali122
  • 03-02-2024
  • Mathematics
contestada

(x-20)²=x²-20
show your working out

Respuesta :

jimrgrant1 jimrgrant1
  • 03-02-2024

Answer:

x = 10.5

Step-by-step explanation:

given the equation

(x - 20)² = x² - 20 ← expand (x - 20)² using FOIL

x² - 40 x + 400 = x² - 20 ( subtract x² from both sides )

- 40x + 400 = - 20 ( subtract 400 from both sides )

- 40x = - 420 ( divide both sides by - 40 )

x = 10.5

Answer Link

Otras preguntas

what is 4\5×3\5+4/5×3\5​
solve. -4.2y + 2.1 > -2.52
Scientists across the world and from many scientific disciplines worked together on _____. Now,​ this information is very helpful to many sciences, including me
What example of figurative language is used in "I have ten legs," when the speaker says, "all my legs shout" (hint:can legs really shout?)
Phillip walks 2/7 each morning and 4/7 mile each evening how far does Phillip walk each day
What is an example of stewardship? Please help me! Thank you! Your answer is appreciated!!❤️❤️
What’s is the answer to this question? Please help me
I really need help! Please help me! The picture is underneath.
How can you improve the way you are currently responding to people who are practicing different religions and upholding different value systems
Help me please it's urgent