Answer:
28.5
Step-by-step explanation:
If you can add brainliest
Please
Answer:
Step-by-step explanation:


x-y=?
so
?+y=x
which means

i hope this helps
100, because, x^2 - 20x + 100 = ( x - 10 )^2;
Answers
1. Solve inside bracket first
7x^2+4x-26+7x^2+3x-15
= (14x^2+7x-41) Answer
2. 5x(6x^2+3x+7)-1(6x^2+3x+7)
= 30x^3+15x^2+35x-6x^2-3x-7
= (30x^3+9x^2+32x-7) Answer