(2x² - 5) - (3x² + 4).
Pretend that there is a -1 in front of :(3x² + 4).
(2x^2-5)-1(3x^2+4)
2x^2-5-3x^-4
2x^2-3x^2-5-4
=-x^2-9
Answer: -x^2-9
Answer:
Step-by-step explanation:
b = 4 × 3.5 = 14 cm²
h = 2,1 cm
then
x= 36
(it is positive since 78 is larger than 42, everything else is correct)
6
it would be six in one hour he would clean 2 houses in two 4 houses then in three it would be six
