do 10 11 12 please need help!!!
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1
4x +5x = 180
x = 20
80: 100
2 angles are of 80
2 angles are of 100
11. 4xsq. +9ysq.+12xy
= (2x +3y)^2
using identity 1
12.
x = 20
80: 100
2 angles are of 80
2 angles are of 100
11. 4xsq. +9ysq.+12xy
= (2x +3y)^2
using identity 1
12.
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