Answer:
41
Step-by-step explanation:
the 2 triangles are same so the angles would be also same. 180-86-53= 41
Answer:
x^3+3x^2+9x+27
Step-by-step explanation:

_____
The factoring of the difference of squares is used (twice):
a² -b² = (a -b)(a +b)
Answer:
Step-by-step explanation: steps explained in attached file
Answer:
35
Step-by-step explanation:
11 × 3 = 33
+ 2 = 35
Robin is 11 (11)
Gwen is 2 years (+2) more than 3 times (×3) Robins age