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Марго1123
@Марго1123
June 2022
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Решите пожалуйста алгебра 7 класс
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liza230526
А) 41^{2} - 31^{2} = 41×41 - 31×31 = 1681 - 961 = 720
б) 76^{2} - 24^{2} = 5776-576=5200
в) 256^{2} - 156^{2} = 65536 - 54336 = 11200
г) 0,783^{2} - 0,217^{2} = 0,613089 - 0,047089 = 0,566
д) (26^{2} - 12^{2} )÷(54^{2} - 16^{2} )= (676-144)÷(2916-256)=532÷2660=0,2
е)(63^{2} - 27^{2} )÷(83^{2} - 79^{2} )= (3969 - 729)÷(6889-6241)= 3240÷648=5
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Answers & Comments
б) 76^{2} - 24^{2} = 5776-576=5200
в) 256^{2} - 156^{2} = 65536 - 54336 = 11200
г) 0,783^{2} - 0,217^{2} = 0,613089 - 0,047089 = 0,566
д) (26^{2} - 12^{2} )÷(54^{2} - 16^{2} )= (676-144)÷(2916-256)=532÷2660=0,2
е)(63^{2} - 27^{2} )÷(83^{2} - 79^{2} )= (3969 - 729)÷(6889-6241)= 3240÷648=5