Answer:
Step-by-step explanation:
= x²(-3 +5) +y²(2 -3) +5xy -2y
= 2x² -y² +5xy -2y
a) there are 4 terms in the simplified expression
b) 2 terms have negative coefficients (-y² and -2y)
Answer:
The no. of days required to finish the work = 10 days
Step-by-step explanation:
<u>In first case :-</u>
No. of workers = 10
No. of days = 5
No. of hours taken = 2 hours
<u>In second case :-</u>
No. of workers = 2
No. of days = ??
No. of hours taken = 5 hours
We know that
⇒ =
⇒ Put all the values in above formula we get
⇒ 10 × 5 × 2 = 2 × × 5
⇒ = 10 days
Thus the no. of days required to finish the work = 10 days
Answers with Explanation.
i. If we raise a number to an exponent of 1, we get the same number.
ii. If we raise 10 to an exponent of 2, it means we multiply 10 by itself two times.
iii. If we raise 10 to an exponent of 3, it means we multiply 10 by itself three times.
iv. If we raise 10 to an exponent of 4, it means we multiply 10 by itself four times.
v. If we raise 10 to an exponent of 5, it means we multiply 10 by itself five times.
vi. Recall that,
We apply this law of exponents to obtain,
vii. We apply
again to obtain,
The distributive property: a(b + c) = ab + ac
(x - 3)(4x + 2) = (x)(4x + 2) + (-3)(4x + 2)
= (x)(4x) + (x)(2) + (-3)(4x) + (-3)(2) = 4x² + 2x - 12x - 6
<h3>= 4x² - 10x - 6</h3>