25x² - 36x +9, when x = 2
(25 × 2)² - (36 × 2) + 9
50² - 72 + 9
2 500 - 72 + 9
using BODMAS
2 500 + 9 - 72
2 509 - 72
= 2 437
Any addition problem shown two ways with the factors switched
Answer:
1,900,000,000
Step-by-step explanation:
The 10^8 gives out how many zeroes are in the final answer, once starting at 19, giving it 8 zeroes gives the answer
A+b=100
a-b=6 ⇒ a= b+6
(b+6)+b=100
2b+6=100
2b=100-6
2b=94
b=94:2
b=47
a=47+6
a=53