Step-by-step explanation:
apply Pythagorean theorem. if a^2 + b^2 = c^2 then
b = √(15^2 - 9^2) = 12.
12 is answer
5 ( x + 3) = 6x - 3
5x + 15 = 6x - 3
x = 18 <====== this is the number
By order of operation
5+1x10
5+10
15
By normal solving
5+1x10
6x10
60
The number which could be added to both sides of the equation to complete the square is; -2.25.
<h3>Which number could be added to both sides of this quadratic equation to complete the square?</h3>
The quadratic equations give in the task content is; 1=x²-3x. Hence, to express the equation by completing the square method; we have;
1 - 2.25 = (x -3/2)² - 2.25
Hence, the number which should be added to both sides of the equation is; -2.25.
Read more on completing the square;
brainly.com/question/10449635
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Answer:
55
Step-by-step explanation:
