Answer:
Step-by-step explanation:
2x²-2x-12 = 2 (x²-x - 6)
but : x²-x - 6 = x² - 2(1/2)x +(1/2)² - (1/2)² - 6
= ( x - 1/2)² - 1/4 - 6
= ( x - 1/2)² - 25/4
x²-x - 6 = ( x - 1/2)² - (5/2)²
by identity ; a² - b² = (a - b ) ( a +b)
x²-x - 6 = ( x - 1/2 - 5/2) ( x - 1/2 +5/2)
x²-x - 6 = (x - 3) (x +2)
so : 2x²-2x-12 =2(x - 3) (x +2) = (2x-6)(x+2) .......(factored form)
now : 2x²-2x-12 = 0 : 2x - 6 = 0 or x+2 = 0
x= 3 or x = - 2 two solutions
Answer:
sqrt(10)
Step-by-step explanation:
Simplify both sides of the inequality.
−5.3≥q+11
Flip the equation.
q+11≤−5.3
Subtract 11 from both sides.
q+11−11≤−5.3−11
ANSWER: q≤−16.3
1.899999999999 hope this helps buddy
Answer:
yes
Step-by-step explanation:
the answer to you picture is 6cm and they are really similar since the 12 cm is as twice as big as the 6cm