Please help me with these short questions.
(don't give me ignorant answers.)
Answers
Answer:
15xsquare - 15x
15yxsquare + 5 yfour+ 50xy square
3xsqure+ 2x - 15x - 10
Step-by-step explanation:
mark brilliant
Answer:
1) 3x (5x - 3)
In this Polynomial,
we first have to multiply 3x by 5x and then multiply 3x by 3
3x × 5x + 3x × (-3)
= 15x² + (-9x)
= 15x² - 9x
2) 5y (3x² + y³ + 10xy)
In this Polynomial,
It is the same concept as first oe, but we have to multiply the number outside the bracket with the numbers inside the bracket
5y × 3x² + 5y × y³ + 5y × 10xy
= 15x²y + 5y^4 + 50xy²
3) (x - 5) (3x + 2)
In this Polynomial,
It is the same concept but with a little difference. We have to take the numbers in the first bracket and multiply each of the numbers in the first bracket by each of the numbers in the second. So here we have to multiply x by 3x and then multiply x by 2 and then do the same with the other number which is -5
= x × 3x + x × 2 + (-5) × 3x + (-5) × 2
= 3x² + 2x + (-15)x + -(10)
= 3x² + 2x - 15x - 10
= 3x² - 13x - 10
Hope this was helpful
I hope this also helped you understand the concept
Thank You and have a Great Day :D