Answer:
Step-by-step explanation:
12a)To rationalize the denominator, multiply the denominator and numerator by √5.

b) (a+b)² = a² + 2ab + b²
(1 +√3)² = 1² + 2*1*√3 + (√3)²
= 1 + 2√3 + 3
= 4 + 2√3
a = 4 ; b =2
13) (a + b)(a - b) = a² - b²

Answer:
A, B, C, D
Step-by-step explanation:
A is equal to 54, B is equal to 23, C is equal to 72, and D is equal to 84.
Answer:
What problem
Step-by-step explanation:
Answer:
1 she spent 133
2 12 yd
3 his sister is 79 meters below him
4 the temp raised by 33 degrees
5 she has 92$ in her bank account
Step-by-step explanation:
Answer:
Step-by-step explanation:
x= 1/4