(-2)cube+2×7-(-2)square+(-2)×7+7square+4
abhi178:
roni do you know about simplification
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(-2)^3=-8
(-2)^2=4
7^2=49
now,(-2)^3+14-(-2)^2-14+49+4=-8+14-4-14+49+4=41
I think 41 is right answer
(-2)^2=4
7^2=49
now,(-2)^3+14-(-2)^2-14+49+4=-8+14-4-14+49+4=41
I think 41 is right answer
Answered by
0
BODMAS:
= (-2)³ + 2 x 7 - (-2)² + (-2) x 7 + (7)² + 4
= (-8) + 2 x 7 - (-4) + (-2) x 7 + (49) + 4
= -8 + 2 x 7 + 4 - 2 x 7 + 49 + 4
= -8 + 14 + 4 - 14 + 49 + 4 [ Cut= + 14 and - 14]
= - 8 + 4 + 49 + 4
= - 8 + 8 + 49 [ Cut= -8 and + 8]
= 49
= (-2)³ + 2 x 7 - (-2)² + (-2) x 7 + (7)² + 4
= (-8) + 2 x 7 - (-4) + (-2) x 7 + (49) + 4
= -8 + 2 x 7 + 4 - 2 x 7 + 49 + 4
= -8 + 14 + 4 - 14 + 49 + 4 [ Cut= + 14 and - 14]
= - 8 + 4 + 49 + 4
= - 8 + 8 + 49 [ Cut= -8 and + 8]
= 49
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