Answer:
(12-7x)
Step-by-step explanation:
144 − 49x²
by observation, we can see that 144 = 12² and 49 = 7²
hence we can rewrite the equation
144 − 49x²
= 12² - 7²x²
= 12² - (7x)²
recall that the expression x² - y² = (x+y)(x-y)
hence,
12² - (7x)²
= (12 + 7x)(12-7x)
(12-7x) appears in the expression above, hence 12 -7x is a factor
Answer:
c
Step-by-step explanation:
Answer:
First awnser
Step-by-step explanation:
4x(7-v2)+v7(7-v2)
28-4v2+7v7-v14
Answer:
98
Step-by-step explanation:
the measure of angles of a triangle=180
the measure of straight angle=180 find angle HAC:
180-128=52
angle A: 180-52-46= 82
now find IAC : 180-82=98 degrees