解不等式:(4x-7)(6x+5)-(3x+2)(8x-9)

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解不等式:(4x-7)(6x+5)-(3x+2)(8x-9)
解不等式:(4x-7)(6x+5)-(3x+2)(8x-9)

解不等式:(4x-7)(6x+5)-(3x+2)(8x-9)
(4x-7)(6x+5)-(3x+2)(8x-9)<5
(24x^2-22x-35)-(24x^2-11x-18)<5
-11x-17<5
-11x<22
x>-2

x>-2

(4x-7)(6x+5)-(3x+2)(8x-9)<5
24x^2-22x-35-(24x^2-11x-18)<5
24x^2-22x-35-24x^2+11x+18<5
-11x-17<5
-11x<22
11x>-22
x>-2还是看不懂,是用到什么公式了吗?(4x-7)(6x+5)-(3x+2)(8x-9)<5 (去括号) 24x^2-2...

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(4x-7)(6x+5)-(3x+2)(8x-9)<5
24x^2-22x-35-(24x^2-11x-18)<5
24x^2-22x-35-24x^2+11x+18<5
-11x-17<5
-11x<22
11x>-22
x>-2

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