x = 64 64 + 64 = 128
x = 116. x + 64 = 180 is the same as x = 180 - 64, which equals 116.
4x² - 30 = 34 4x² = 34 + 30 4x² = 64 4x = √64 4x = 8 x = 8 ÷ 4 x = 2
a=64 b=8 (x+16x+64)=(x+8)^2
find x when, 2x=128 2x=128 /2 /2 x=128 /2 x=64 then check your answer by doing the following if x=64, then what is 2x? 2(64)=? or 2 * 64=? or 2 x 64=? 2 times 64 equals 128!
x = 64 64 + 64 = 128
x = 116. x + 64 = 180 is the same as x = 180 - 64, which equals 116.
If x=6 and y=8, then [ 5x + 8y ] = 5(6) + 8(8) = 30 + 64 = 94
X equals to 8
4x8=32 32x2=64 64-30=34 X=8
8x8 = 64 so it is 64 (the y) 3x4 = 12 so it is 12 (the x) 64+12 is 76.
x2 + x - 30 = (x + 6)(x - 5)
-8x + 6 = -58 -8x = -64 x= -64/-8 x = 8
x2 + 12x - 64 = 0 ∴ (x + 16)(x - 4) = 0 ∴ x ∈ {4, -16}
4x² - 30 = 34 4x² = 34 + 30 4x² = 64 4x = √64 4x = 8 x = 8 ÷ 4 x = 2
basic algebra -8x + 6 = -58 -8x = -64 x = (-64/-8) x = 8
67 = x + 97-30 = x