0
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4x - 4x is 0 because you can change 4x - 4x into (4 - 4)x, which comes out to 0x, which would answer to 0 anyway since anything times 0 is, well, 0.
4x × 4x = (4x)² = 16x²
4x - 10 = -4x + 22 +4x+10=+4x +10 8x = 32 x = 4
16x2 - 25 = (4x + 5) ( 4x - 5)
4x - 9 = 35 4x = 35 + 9 4x = 44 4x/4 = 44/4 x=11
4X = 16X2 4X - 16X2 = 0 (1 - 4X)4X = 0 ------------------ as you see X = 0 -------- 1 - 4X = 0 - 4X = - 1 X = 1/4 ----------- So, X = 0 and X = 1/4. You check.