Mathematics, 14.02.2021 23:40 wolfycatsz74

1. Show that (10a + 5)^2 = 100a(a + 1) + 25,
for every a real number. How is this formula explaining the rule we have, to square a number
which ends in 5, such as
25^2 = 625, 35^3 = 1225, 105^2 = 11025^2, etc. ?

Answers: 3

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 19:00, mustafajibawi1

Eis the midpoint of line segment ac and bd also line segment ed is congruent to ec prove that line segment ae is congruent to line segment be

Answers: 3

continue

Mathematics, 21.06.2019 19:30, karlacr5117

Agarden consists of an apple tree, a pear tree, cauliflowers, and heads of cabbage. there are 40 vegetables in the garden. 24 of them are cauliflowers. what is the ratio of the number of cauliflowers to the number of heads of cabbage?

Answers: 2

continue

Mathematics, 21.06.2019 21:00, PotatoBananad

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

Answers: 1

continue

Mathematics, 21.06.2019 21:30, peytonamandac9114

Ahypothesis is: a the average squared deviations about the mean of a distribution of values b) an empirically testable statement that is an unproven supposition developed in order to explain phenomena a statement that asserts the status quo; that is, any change from what has been c) thought to be true is due to random sampling order da statement that is the opposite of the null hypothesis e) the error made by rejecting the null hypothesis when it is true

Answers: 2

continue

You know the right answer?

1. Show that (10a + 5)^2 = 100a(a + 1) + 25,
for every a real number. How is this formula exp...