my awesomest math puzzle

(A+B)(B-B)
ARCHIMEDES
BRAMHAGUPTA
DAVIDHILBERT
HIPPOCRATES
INTEGERS
IRRATIONAL
ISAACNEWTON
RATIONAL

it contains all math stuff

Try to find all 9 words on this board.

U F E F L S R E G E T N I S J
S T G L F L Z X V I H V X E W
N O T W E N C A A S I K E D U
E J E R A T I O N A L G B E Y
H V U M E U F W I N Z R ) M H
Y I F Y D B W F W P A J B I V
Y R P F R D L C S M O N - H L
E R H P K F P I H P D Q B C N
W A Y U O W Y A H Z J M ( R L
G T X P D C G L M D R W ) A K
M I B T D U R K X B I H B G R
O O N H P O A A E A D V + T F
B N X T H N B M T R C A A G V
X A A O E Q J R Z E O N ( D N
U L H Y T H O I V N S M F Z O
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Answer Key for my awesomest math puzzle

X
Y
123456789101112131415
1# # # # # S R E G E T N I S #
2# # # # # # # # # # # # # E #
3N O T W E N C A A S I # # D #
4# # # R A T I O N A L # B E #
5H # # # E # # # # # # R ) M #
6# I # # # B # # # # A # B I #
7# R P # # # L # # M # # - H #
8# R # P # # # I H # # # B C #
9# A # # O # # A H # # # ( R #
10# T # # # C G # # D # # ) A #
11# I # # # U R # # # I # B # #
12# O # # P # # A # # # V + # #
13# N # T # # # # T # # # A # #
14# A A # # # # # # E # # ( D #
15# L # # # # # # # # S # # # #
Word X Y Direction
(A+B)(B-B)  1313n
ARCHIMEDES  1410n
BRAMHAGUPTA  134sw
DAVIDHILBERT  88nw
HIPPOCRATES  15se
INTEGERS  131w
IRRATIONAL  26s
ISAACNEWTON  113w
RATIONAL  44e