Question

Can anyone help me with this . it's very important, please help me fast.


Serious and correct answers only ​

Answer 1

Answer:

here are your answers hope it helps....

Step-by-step explanation:

using identity in all cases i.e

${a}^{2} - {b}^{2} = (a + b)(a - b)$

(i) 47^2 -46^2 = (47+46)(47-46)

= (93)(1) =93

(ii) 52^2-51^2 = (52+51)(52-51)

= (103)(1)=103

(iii) 68^2-67^2 = (68+67)(68-67)

= (135)(1)=135

(iv)73^2-72^2=(73+72)(73-72)

=(145)(1)=145

(v)84^2-83^2=(84+83)(84-83)

=(167)(1)=167

(vi)91^2-90^2=(91+90)(91-90)

=181×1=181

(vii)100^2-99^2=(100+99)(100-99)

=199×1=199

(viii)212^2-211^2=(212+211)(212-211)

=423×1=423