Answer:
A
Step-by-step explanation:
given 
note that 49² = 2401, hence
= 
→ A
Answer:
when multiplying by 10 just move up by one zero
X + y = 9 Subtract x from both sides.
y = 9 - x
x^2 + y^2 = 53
x^2 + (9 - x)^2 = 53 Remove the brackets.
x^2 + 81 - 18x + x^2 = 53 Collect the like terms on the left.
2x^2 - 18x + 81 = 53 Subtract 53 from both sides.
2x^2 - 18x + 81 - 53 = 0
2x^2 - 18x + 28 = 0 This factors, but you can see it much easier if you pull out 2 as a common factor.
2(x^2 - 9x + 14) = 0
2(x - 2)(x - 7) =0 You could divide by 2 on both sides. But you can also leave it.
x - 2 = 0
x = 2
x - 7 = 0
x = 7
If x = 2 then y = 7
If x = 7 then y = 2
3 (15-6)+(18-12)^2=
3 (9) + (6)^2=
27 + 36 =
63
after solving 
we get 
Step-by-step explanation:
We need to find the value of x in:
Solving:
So, after solving we get
Keywords: Solving the expression
Learn more about Solving the expression at:
#learnwithBrainly
